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1 //===-- tsan_interface.h ----------------------------------------*- C++ -*-===//
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2 //
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3 // Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
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4 // See https://llvm.org/LICENSE.txt for license information.
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5 // SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
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111
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6 //
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7 //===----------------------------------------------------------------------===//
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8 //
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9 // This file is a part of ThreadSanitizer (TSan), a race detector.
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10 //
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11 // The functions declared in this header will be inserted by the instrumentation
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12 // module.
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13 // This header can be included by the instrumented program or by TSan tests.
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14 //===----------------------------------------------------------------------===//
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15 #ifndef TSAN_INTERFACE_H
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16 #define TSAN_INTERFACE_H
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17
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18 #include <sanitizer_common/sanitizer_internal_defs.h>
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19 using __sanitizer::uptr;
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20 using __sanitizer::tid_t;
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21
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22 // This header should NOT include any other headers.
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23 // All functions in this header are extern "C" and start with __tsan_.
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24
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25 #ifdef __cplusplus
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26 extern "C" {
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27 #endif
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28
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29 #if !SANITIZER_GO
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30
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31 // This function should be called at the very beginning of the process,
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32 // before any instrumented code is executed and before any call to malloc.
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33 SANITIZER_INTERFACE_ATTRIBUTE void __tsan_init();
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34
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35 SANITIZER_INTERFACE_ATTRIBUTE void __tsan_flush_memory();
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36
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37 SANITIZER_INTERFACE_ATTRIBUTE void __tsan_read1(void *addr);
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38 SANITIZER_INTERFACE_ATTRIBUTE void __tsan_read2(void *addr);
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39 SANITIZER_INTERFACE_ATTRIBUTE void __tsan_read4(void *addr);
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40 SANITIZER_INTERFACE_ATTRIBUTE void __tsan_read8(void *addr);
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41 SANITIZER_INTERFACE_ATTRIBUTE void __tsan_read16(void *addr);
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42
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43 SANITIZER_INTERFACE_ATTRIBUTE void __tsan_write1(void *addr);
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44 SANITIZER_INTERFACE_ATTRIBUTE void __tsan_write2(void *addr);
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45 SANITIZER_INTERFACE_ATTRIBUTE void __tsan_write4(void *addr);
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46 SANITIZER_INTERFACE_ATTRIBUTE void __tsan_write8(void *addr);
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47 SANITIZER_INTERFACE_ATTRIBUTE void __tsan_write16(void *addr);
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48
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49 SANITIZER_INTERFACE_ATTRIBUTE void __tsan_unaligned_read2(const void *addr);
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50 SANITIZER_INTERFACE_ATTRIBUTE void __tsan_unaligned_read4(const void *addr);
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51 SANITIZER_INTERFACE_ATTRIBUTE void __tsan_unaligned_read8(const void *addr);
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52 SANITIZER_INTERFACE_ATTRIBUTE void __tsan_unaligned_read16(const void *addr);
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53
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54 SANITIZER_INTERFACE_ATTRIBUTE void __tsan_unaligned_write2(void *addr);
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55 SANITIZER_INTERFACE_ATTRIBUTE void __tsan_unaligned_write4(void *addr);
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56 SANITIZER_INTERFACE_ATTRIBUTE void __tsan_unaligned_write8(void *addr);
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57 SANITIZER_INTERFACE_ATTRIBUTE void __tsan_unaligned_write16(void *addr);
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58
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59 SANITIZER_INTERFACE_ATTRIBUTE void __tsan_read1_pc(void *addr, void *pc);
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60 SANITIZER_INTERFACE_ATTRIBUTE void __tsan_read2_pc(void *addr, void *pc);
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61 SANITIZER_INTERFACE_ATTRIBUTE void __tsan_read4_pc(void *addr, void *pc);
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62 SANITIZER_INTERFACE_ATTRIBUTE void __tsan_read8_pc(void *addr, void *pc);
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63 SANITIZER_INTERFACE_ATTRIBUTE void __tsan_read16_pc(void *addr, void *pc);
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64
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65 SANITIZER_INTERFACE_ATTRIBUTE void __tsan_write1_pc(void *addr, void *pc);
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66 SANITIZER_INTERFACE_ATTRIBUTE void __tsan_write2_pc(void *addr, void *pc);
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67 SANITIZER_INTERFACE_ATTRIBUTE void __tsan_write4_pc(void *addr, void *pc);
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68 SANITIZER_INTERFACE_ATTRIBUTE void __tsan_write8_pc(void *addr, void *pc);
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69 SANITIZER_INTERFACE_ATTRIBUTE void __tsan_write16_pc(void *addr, void *pc);
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70
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71 SANITIZER_INTERFACE_ATTRIBUTE void __tsan_vptr_read(void **vptr_p);
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72 SANITIZER_INTERFACE_ATTRIBUTE
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73 void __tsan_vptr_update(void **vptr_p, void *new_val);
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74
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75 SANITIZER_INTERFACE_ATTRIBUTE void __tsan_func_entry(void *call_pc);
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76 SANITIZER_INTERFACE_ATTRIBUTE void __tsan_func_exit();
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77
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78 SANITIZER_INTERFACE_ATTRIBUTE void __tsan_ignore_thread_begin();
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79 SANITIZER_INTERFACE_ATTRIBUTE void __tsan_ignore_thread_end();
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80
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81 SANITIZER_INTERFACE_ATTRIBUTE
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82 void *__tsan_external_register_tag(const char *object_type);
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83 SANITIZER_INTERFACE_ATTRIBUTE
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84 void __tsan_external_register_header(void *tag, const char *header);
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85 SANITIZER_INTERFACE_ATTRIBUTE
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86 void __tsan_external_assign_tag(void *addr, void *tag);
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87 SANITIZER_INTERFACE_ATTRIBUTE
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88 void __tsan_external_read(void *addr, void *caller_pc, void *tag);
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89 SANITIZER_INTERFACE_ATTRIBUTE
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90 void __tsan_external_write(void *addr, void *caller_pc, void *tag);
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91
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92 SANITIZER_INTERFACE_ATTRIBUTE
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93 void __tsan_read_range(void *addr, unsigned long size);
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94 SANITIZER_INTERFACE_ATTRIBUTE
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95 void __tsan_write_range(void *addr, unsigned long size);
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96
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97 SANITIZER_INTERFACE_ATTRIBUTE
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98 void __tsan_read_range_pc(void *addr, unsigned long size, void *pc); // NOLINT
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99 SANITIZER_INTERFACE_ATTRIBUTE
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100 void __tsan_write_range_pc(void *addr, unsigned long size, void *pc); // NOLINT
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111
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101
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102 // User may provide function that would be called right when TSan detects
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103 // an error. The argument 'report' is an opaque pointer that can be used to
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104 // gather additional information using other TSan report API functions.
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105 SANITIZER_INTERFACE_ATTRIBUTE
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106 void __tsan_on_report(void *report);
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107
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108 // If TSan is currently reporting a detected issue on the current thread,
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109 // returns an opaque pointer to the current report. Otherwise returns NULL.
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110 SANITIZER_INTERFACE_ATTRIBUTE
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111 void *__tsan_get_current_report();
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112
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113 // Returns a report's description (issue type), number of duplicate issues
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114 // found, counts of array data (stack traces, memory operations, locations,
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115 // mutexes, threads, unique thread IDs) and a stack trace of a sleep() call (if
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116 // one was involved in the issue).
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117 SANITIZER_INTERFACE_ATTRIBUTE
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118 int __tsan_get_report_data(void *report, const char **description, int *count,
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119 int *stack_count, int *mop_count, int *loc_count,
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120 int *mutex_count, int *thread_count,
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121 int *unique_tid_count, void **sleep_trace,
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122 uptr trace_size);
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123
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145
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124 /// Retrieves the "tag" from a report (for external-race report types). External
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125 /// races can be associated with a tag which give them more meaning. For example
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126 /// tag value '1' means "Swift access race". Tag value '0' indicated a plain
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127 /// external race.
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128 ///
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129 /// \param report opaque pointer to the current report (obtained as argument in
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130 /// __tsan_on_report, or from __tsan_get_current_report)
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131 /// \param [out] tag points to storage that will be filled with the tag value
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132 ///
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133 /// \returns non-zero value on success, zero on failure
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134 SANITIZER_INTERFACE_ATTRIBUTE
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135 int __tsan_get_report_tag(void *report, uptr *tag);
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136
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111
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137 // Returns information about stack traces included in the report.
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138 SANITIZER_INTERFACE_ATTRIBUTE
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139 int __tsan_get_report_stack(void *report, uptr idx, void **trace,
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140 uptr trace_size);
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141
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142 // Returns information about memory operations included in the report.
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143 SANITIZER_INTERFACE_ATTRIBUTE
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144 int __tsan_get_report_mop(void *report, uptr idx, int *tid, void **addr,
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145 int *size, int *write, int *atomic, void **trace,
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146 uptr trace_size);
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147
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148 // Returns information about locations included in the report.
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149 SANITIZER_INTERFACE_ATTRIBUTE
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150 int __tsan_get_report_loc(void *report, uptr idx, const char **type,
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151 void **addr, uptr *start, uptr *size, int *tid,
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152 int *fd, int *suppressable, void **trace,
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153 uptr trace_size);
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154
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155 SANITIZER_INTERFACE_ATTRIBUTE
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156 int __tsan_get_report_loc_object_type(void *report, uptr idx,
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157 const char **object_type);
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158
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159 // Returns information about mutexes included in the report.
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160 SANITIZER_INTERFACE_ATTRIBUTE
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161 int __tsan_get_report_mutex(void *report, uptr idx, uptr *mutex_id, void **addr,
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162 int *destroyed, void **trace, uptr trace_size);
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163
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164 // Returns information about threads included in the report.
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165 SANITIZER_INTERFACE_ATTRIBUTE
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166 int __tsan_get_report_thread(void *report, uptr idx, int *tid, tid_t *os_id,
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167 int *running, const char **name, int *parent_tid,
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168 void **trace, uptr trace_size);
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169
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170 // Returns information about unique thread IDs included in the report.
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171 SANITIZER_INTERFACE_ATTRIBUTE
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172 int __tsan_get_report_unique_tid(void *report, uptr idx, int *tid);
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173
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174 // Returns the type of the pointer (heap, stack, global, ...) and if possible
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175 // also the starting address (e.g. of a heap allocation) and size.
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176 SANITIZER_INTERFACE_ATTRIBUTE
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177 const char *__tsan_locate_address(uptr addr, char *name, uptr name_size,
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178 uptr *region_address, uptr *region_size);
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179
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180 // Returns the allocation stack for a heap pointer.
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181 SANITIZER_INTERFACE_ATTRIBUTE
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182 int __tsan_get_alloc_stack(uptr addr, uptr *trace, uptr size, int *thread_id,
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183 tid_t *os_id);
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184
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185 #endif // SANITIZER_GO
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186
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187 #ifdef __cplusplus
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188 } // extern "C"
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189 #endif
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190
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191 namespace __tsan {
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192
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193 // These should match declarations from public tsan_interface_atomic.h header.
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194 typedef unsigned char a8;
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195 typedef unsigned short a16;
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111
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196 typedef unsigned int a32;
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197 typedef unsigned long long a64;
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111
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198 #if !SANITIZER_GO && (defined(__SIZEOF_INT128__) \
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199 || (__clang_major__ * 100 + __clang_minor__ >= 302)) && !defined(__mips64)
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200 __extension__ typedef __int128 a128;
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201 # define __TSAN_HAS_INT128 1
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202 #else
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203 # define __TSAN_HAS_INT128 0
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204 #endif
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205
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206 // Part of ABI, do not change.
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145
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207 // https://github.com/llvm/llvm-project/blob/master/libcxx/include/atomic
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111
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208 typedef enum {
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209 mo_relaxed,
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210 mo_consume,
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211 mo_acquire,
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212 mo_release,
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213 mo_acq_rel,
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214 mo_seq_cst
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215 } morder;
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216
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217 struct ThreadState;
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218
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219 extern "C" {
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220 SANITIZER_INTERFACE_ATTRIBUTE
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221 a8 __tsan_atomic8_load(const volatile a8 *a, morder mo);
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222 SANITIZER_INTERFACE_ATTRIBUTE
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223 a16 __tsan_atomic16_load(const volatile a16 *a, morder mo);
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224 SANITIZER_INTERFACE_ATTRIBUTE
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225 a32 __tsan_atomic32_load(const volatile a32 *a, morder mo);
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226 SANITIZER_INTERFACE_ATTRIBUTE
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227 a64 __tsan_atomic64_load(const volatile a64 *a, morder mo);
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228 #if __TSAN_HAS_INT128
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229 SANITIZER_INTERFACE_ATTRIBUTE
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230 a128 __tsan_atomic128_load(const volatile a128 *a, morder mo);
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231 #endif
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232
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233 SANITIZER_INTERFACE_ATTRIBUTE
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234 void __tsan_atomic8_store(volatile a8 *a, a8 v, morder mo);
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235 SANITIZER_INTERFACE_ATTRIBUTE
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236 void __tsan_atomic16_store(volatile a16 *a, a16 v, morder mo);
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237 SANITIZER_INTERFACE_ATTRIBUTE
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238 void __tsan_atomic32_store(volatile a32 *a, a32 v, morder mo);
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239 SANITIZER_INTERFACE_ATTRIBUTE
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240 void __tsan_atomic64_store(volatile a64 *a, a64 v, morder mo);
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241 #if __TSAN_HAS_INT128
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242 SANITIZER_INTERFACE_ATTRIBUTE
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243 void __tsan_atomic128_store(volatile a128 *a, a128 v, morder mo);
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244 #endif
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245
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246 SANITIZER_INTERFACE_ATTRIBUTE
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247 a8 __tsan_atomic8_exchange(volatile a8 *a, a8 v, morder mo);
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248 SANITIZER_INTERFACE_ATTRIBUTE
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249 a16 __tsan_atomic16_exchange(volatile a16 *a, a16 v, morder mo);
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250 SANITIZER_INTERFACE_ATTRIBUTE
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251 a32 __tsan_atomic32_exchange(volatile a32 *a, a32 v, morder mo);
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252 SANITIZER_INTERFACE_ATTRIBUTE
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253 a64 __tsan_atomic64_exchange(volatile a64 *a, a64 v, morder mo);
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254 #if __TSAN_HAS_INT128
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255 SANITIZER_INTERFACE_ATTRIBUTE
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256 a128 __tsan_atomic128_exchange(volatile a128 *a, a128 v, morder mo);
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257 #endif
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258
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259 SANITIZER_INTERFACE_ATTRIBUTE
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260 a8 __tsan_atomic8_fetch_add(volatile a8 *a, a8 v, morder mo);
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261 SANITIZER_INTERFACE_ATTRIBUTE
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262 a16 __tsan_atomic16_fetch_add(volatile a16 *a, a16 v, morder mo);
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263 SANITIZER_INTERFACE_ATTRIBUTE
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264 a32 __tsan_atomic32_fetch_add(volatile a32 *a, a32 v, morder mo);
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265 SANITIZER_INTERFACE_ATTRIBUTE
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266 a64 __tsan_atomic64_fetch_add(volatile a64 *a, a64 v, morder mo);
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267 #if __TSAN_HAS_INT128
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268 SANITIZER_INTERFACE_ATTRIBUTE
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269 a128 __tsan_atomic128_fetch_add(volatile a128 *a, a128 v, morder mo);
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270 #endif
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271
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272 SANITIZER_INTERFACE_ATTRIBUTE
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273 a8 __tsan_atomic8_fetch_sub(volatile a8 *a, a8 v, morder mo);
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274 SANITIZER_INTERFACE_ATTRIBUTE
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275 a16 __tsan_atomic16_fetch_sub(volatile a16 *a, a16 v, morder mo);
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276 SANITIZER_INTERFACE_ATTRIBUTE
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277 a32 __tsan_atomic32_fetch_sub(volatile a32 *a, a32 v, morder mo);
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278 SANITIZER_INTERFACE_ATTRIBUTE
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279 a64 __tsan_atomic64_fetch_sub(volatile a64 *a, a64 v, morder mo);
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280 #if __TSAN_HAS_INT128
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281 SANITIZER_INTERFACE_ATTRIBUTE
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282 a128 __tsan_atomic128_fetch_sub(volatile a128 *a, a128 v, morder mo);
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283 #endif
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284
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285 SANITIZER_INTERFACE_ATTRIBUTE
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286 a8 __tsan_atomic8_fetch_and(volatile a8 *a, a8 v, morder mo);
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287 SANITIZER_INTERFACE_ATTRIBUTE
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288 a16 __tsan_atomic16_fetch_and(volatile a16 *a, a16 v, morder mo);
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289 SANITIZER_INTERFACE_ATTRIBUTE
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290 a32 __tsan_atomic32_fetch_and(volatile a32 *a, a32 v, morder mo);
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291 SANITIZER_INTERFACE_ATTRIBUTE
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292 a64 __tsan_atomic64_fetch_and(volatile a64 *a, a64 v, morder mo);
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293 #if __TSAN_HAS_INT128
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294 SANITIZER_INTERFACE_ATTRIBUTE
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295 a128 __tsan_atomic128_fetch_and(volatile a128 *a, a128 v, morder mo);
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296 #endif
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297
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298 SANITIZER_INTERFACE_ATTRIBUTE
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299 a8 __tsan_atomic8_fetch_or(volatile a8 *a, a8 v, morder mo);
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300 SANITIZER_INTERFACE_ATTRIBUTE
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301 a16 __tsan_atomic16_fetch_or(volatile a16 *a, a16 v, morder mo);
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302 SANITIZER_INTERFACE_ATTRIBUTE
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303 a32 __tsan_atomic32_fetch_or(volatile a32 *a, a32 v, morder mo);
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304 SANITIZER_INTERFACE_ATTRIBUTE
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305 a64 __tsan_atomic64_fetch_or(volatile a64 *a, a64 v, morder mo);
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306 #if __TSAN_HAS_INT128
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307 SANITIZER_INTERFACE_ATTRIBUTE
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308 a128 __tsan_atomic128_fetch_or(volatile a128 *a, a128 v, morder mo);
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309 #endif
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310
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311 SANITIZER_INTERFACE_ATTRIBUTE
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312 a8 __tsan_atomic8_fetch_xor(volatile a8 *a, a8 v, morder mo);
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313 SANITIZER_INTERFACE_ATTRIBUTE
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314 a16 __tsan_atomic16_fetch_xor(volatile a16 *a, a16 v, morder mo);
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315 SANITIZER_INTERFACE_ATTRIBUTE
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316 a32 __tsan_atomic32_fetch_xor(volatile a32 *a, a32 v, morder mo);
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317 SANITIZER_INTERFACE_ATTRIBUTE
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318 a64 __tsan_atomic64_fetch_xor(volatile a64 *a, a64 v, morder mo);
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319 #if __TSAN_HAS_INT128
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320 SANITIZER_INTERFACE_ATTRIBUTE
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321 a128 __tsan_atomic128_fetch_xor(volatile a128 *a, a128 v, morder mo);
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322 #endif
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323
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324 SANITIZER_INTERFACE_ATTRIBUTE
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325 a8 __tsan_atomic8_fetch_nand(volatile a8 *a, a8 v, morder mo);
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326 SANITIZER_INTERFACE_ATTRIBUTE
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327 a16 __tsan_atomic16_fetch_nand(volatile a16 *a, a16 v, morder mo);
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328 SANITIZER_INTERFACE_ATTRIBUTE
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329 a32 __tsan_atomic32_fetch_nand(volatile a32 *a, a32 v, morder mo);
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330 SANITIZER_INTERFACE_ATTRIBUTE
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331 a64 __tsan_atomic64_fetch_nand(volatile a64 *a, a64 v, morder mo);
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332 #if __TSAN_HAS_INT128
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333 SANITIZER_INTERFACE_ATTRIBUTE
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334 a128 __tsan_atomic128_fetch_nand(volatile a128 *a, a128 v, morder mo);
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335 #endif
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336
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337 SANITIZER_INTERFACE_ATTRIBUTE
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338 int __tsan_atomic8_compare_exchange_strong(volatile a8 *a, a8 *c, a8 v,
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339 morder mo, morder fmo);
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340 SANITIZER_INTERFACE_ATTRIBUTE
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341 int __tsan_atomic16_compare_exchange_strong(volatile a16 *a, a16 *c, a16 v,
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342 morder mo, morder fmo);
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343 SANITIZER_INTERFACE_ATTRIBUTE
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344 int __tsan_atomic32_compare_exchange_strong(volatile a32 *a, a32 *c, a32 v,
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345 morder mo, morder fmo);
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346 SANITIZER_INTERFACE_ATTRIBUTE
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347 int __tsan_atomic64_compare_exchange_strong(volatile a64 *a, a64 *c, a64 v,
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348 morder mo, morder fmo);
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349 #if __TSAN_HAS_INT128
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350 SANITIZER_INTERFACE_ATTRIBUTE
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351 int __tsan_atomic128_compare_exchange_strong(volatile a128 *a, a128 *c, a128 v,
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352 morder mo, morder fmo);
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353 #endif
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354
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355 SANITIZER_INTERFACE_ATTRIBUTE
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356 int __tsan_atomic8_compare_exchange_weak(volatile a8 *a, a8 *c, a8 v, morder mo,
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357 morder fmo);
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358 SANITIZER_INTERFACE_ATTRIBUTE
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359 int __tsan_atomic16_compare_exchange_weak(volatile a16 *a, a16 *c, a16 v,
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360 morder mo, morder fmo);
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361 SANITIZER_INTERFACE_ATTRIBUTE
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362 int __tsan_atomic32_compare_exchange_weak(volatile a32 *a, a32 *c, a32 v,
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363 morder mo, morder fmo);
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364 SANITIZER_INTERFACE_ATTRIBUTE
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365 int __tsan_atomic64_compare_exchange_weak(volatile a64 *a, a64 *c, a64 v,
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366 morder mo, morder fmo);
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367 #if __TSAN_HAS_INT128
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368 SANITIZER_INTERFACE_ATTRIBUTE
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369 int __tsan_atomic128_compare_exchange_weak(volatile a128 *a, a128 *c, a128 v,
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370 morder mo, morder fmo);
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371 #endif
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372
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373 SANITIZER_INTERFACE_ATTRIBUTE
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374 a8 __tsan_atomic8_compare_exchange_val(volatile a8 *a, a8 c, a8 v, morder mo,
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375 morder fmo);
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376 SANITIZER_INTERFACE_ATTRIBUTE
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377 a16 __tsan_atomic16_compare_exchange_val(volatile a16 *a, a16 c, a16 v,
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378 morder mo, morder fmo);
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379 SANITIZER_INTERFACE_ATTRIBUTE
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380 a32 __tsan_atomic32_compare_exchange_val(volatile a32 *a, a32 c, a32 v,
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381 morder mo, morder fmo);
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382 SANITIZER_INTERFACE_ATTRIBUTE
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383 a64 __tsan_atomic64_compare_exchange_val(volatile a64 *a, a64 c, a64 v,
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384 morder mo, morder fmo);
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385 #if __TSAN_HAS_INT128
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386 SANITIZER_INTERFACE_ATTRIBUTE
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387 a128 __tsan_atomic128_compare_exchange_val(volatile a128 *a, a128 c, a128 v,
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388 morder mo, morder fmo);
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389 #endif
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390
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391 SANITIZER_INTERFACE_ATTRIBUTE
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392 void __tsan_atomic_thread_fence(morder mo);
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393 SANITIZER_INTERFACE_ATTRIBUTE
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394 void __tsan_atomic_signal_fence(morder mo);
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395
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396 SANITIZER_INTERFACE_ATTRIBUTE
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397 void __tsan_go_atomic32_load(ThreadState *thr, uptr cpc, uptr pc, u8 *a);
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398 SANITIZER_INTERFACE_ATTRIBUTE
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399 void __tsan_go_atomic64_load(ThreadState *thr, uptr cpc, uptr pc, u8 *a);
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400 SANITIZER_INTERFACE_ATTRIBUTE
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401 void __tsan_go_atomic32_store(ThreadState *thr, uptr cpc, uptr pc, u8 *a);
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402 SANITIZER_INTERFACE_ATTRIBUTE
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403 void __tsan_go_atomic64_store(ThreadState *thr, uptr cpc, uptr pc, u8 *a);
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404 SANITIZER_INTERFACE_ATTRIBUTE
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405 void __tsan_go_atomic32_fetch_add(ThreadState *thr, uptr cpc, uptr pc, u8 *a);
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406 SANITIZER_INTERFACE_ATTRIBUTE
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407 void __tsan_go_atomic64_fetch_add(ThreadState *thr, uptr cpc, uptr pc, u8 *a);
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408 SANITIZER_INTERFACE_ATTRIBUTE
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409 void __tsan_go_atomic32_exchange(ThreadState *thr, uptr cpc, uptr pc, u8 *a);
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410 SANITIZER_INTERFACE_ATTRIBUTE
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411 void __tsan_go_atomic64_exchange(ThreadState *thr, uptr cpc, uptr pc, u8 *a);
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412 SANITIZER_INTERFACE_ATTRIBUTE
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413 void __tsan_go_atomic32_compare_exchange(ThreadState *thr, uptr cpc, uptr pc,
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414 u8 *a);
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415 SANITIZER_INTERFACE_ATTRIBUTE
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416 void __tsan_go_atomic64_compare_exchange(ThreadState *thr, uptr cpc, uptr pc,
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417 u8 *a);
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418 } // extern "C"
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419
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420 } // namespace __tsan
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421
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422 #endif // TSAN_INTERFACE_H
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