123 lines
3.9 KiB
C++
123 lines
3.9 KiB
C++
//===-- tsan_symbolize.cpp ------------------------------------------------===//
|
|
//
|
|
// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
|
|
// See https://llvm.org/LICENSE.txt for license information.
|
|
// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
|
|
//
|
|
//===----------------------------------------------------------------------===//
|
|
//
|
|
// This file is a part of ThreadSanitizer (TSan), a race detector.
|
|
//
|
|
//===----------------------------------------------------------------------===//
|
|
|
|
#include "tsan_symbolize.h"
|
|
|
|
#include "sanitizer_common/sanitizer_common.h"
|
|
#include "sanitizer_common/sanitizer_placement_new.h"
|
|
#include "sanitizer_common/sanitizer_symbolizer.h"
|
|
#include "tsan_flags.h"
|
|
#include "tsan_report.h"
|
|
#include "tsan_rtl.h"
|
|
|
|
namespace __tsan {
|
|
|
|
void EnterSymbolizer() {
|
|
ThreadState *thr = cur_thread();
|
|
CHECK(!thr->in_symbolizer);
|
|
thr->in_symbolizer = true;
|
|
thr->ignore_interceptors++;
|
|
}
|
|
|
|
void ExitSymbolizer() {
|
|
ThreadState *thr = cur_thread();
|
|
CHECK(thr->in_symbolizer);
|
|
thr->in_symbolizer = false;
|
|
thr->ignore_interceptors--;
|
|
}
|
|
|
|
// Legacy API.
|
|
// May be overriden by JIT/JAVA/etc,
|
|
// whatever produces PCs marked with kExternalPCBit.
|
|
SANITIZER_WEAK_DEFAULT_IMPL
|
|
bool __tsan_symbolize_external(uptr pc, char *func_buf, uptr func_siz,
|
|
char *file_buf, uptr file_siz, int *line,
|
|
int *col) {
|
|
return false;
|
|
}
|
|
|
|
// New API: call __tsan_symbolize_external_ex only when it exists.
|
|
// Once old clients are gone, provide dummy implementation.
|
|
SANITIZER_WEAK_DEFAULT_IMPL
|
|
void __tsan_symbolize_external_ex(uptr pc,
|
|
void (*add_frame)(void *, const char *,
|
|
const char *, int, int),
|
|
void *ctx) {}
|
|
|
|
struct SymbolizedStackBuilder {
|
|
SymbolizedStack *head;
|
|
SymbolizedStack *tail;
|
|
uptr addr;
|
|
};
|
|
|
|
static void AddFrame(void *ctx, const char *function_name, const char *file,
|
|
int line, int column) {
|
|
SymbolizedStackBuilder *ssb = (struct SymbolizedStackBuilder *)ctx;
|
|
if (ssb->tail) {
|
|
ssb->tail->next = SymbolizedStack::New(ssb->addr);
|
|
ssb->tail = ssb->tail->next;
|
|
} else {
|
|
ssb->head = ssb->tail = SymbolizedStack::New(ssb->addr);
|
|
}
|
|
AddressInfo *info = &ssb->tail->info;
|
|
if (function_name) {
|
|
info->function = internal_strdup(function_name);
|
|
}
|
|
if (file) {
|
|
info->file = internal_strdup(file);
|
|
}
|
|
info->line = line;
|
|
info->column = column;
|
|
}
|
|
|
|
SymbolizedStack *SymbolizeCode(uptr addr) {
|
|
// Check if PC comes from non-native land.
|
|
if (addr & kExternalPCBit) {
|
|
SymbolizedStackBuilder ssb = {nullptr, nullptr, addr};
|
|
__tsan_symbolize_external_ex(addr, AddFrame, &ssb);
|
|
if (ssb.head)
|
|
return ssb.head;
|
|
// Legacy code: remove along with the declaration above
|
|
// once all clients using this API are gone.
|
|
// Declare static to not consume too much stack space.
|
|
// We symbolize reports in a single thread, so this is fine.
|
|
static char func_buf[1024];
|
|
static char file_buf[1024];
|
|
int line, col;
|
|
SymbolizedStack *frame = SymbolizedStack::New(addr);
|
|
if (__tsan_symbolize_external(addr, func_buf, sizeof(func_buf), file_buf,
|
|
sizeof(file_buf), &line, &col)) {
|
|
frame->info.function = internal_strdup(func_buf);
|
|
frame->info.file = internal_strdup(file_buf);
|
|
frame->info.line = line;
|
|
frame->info.column = col;
|
|
}
|
|
return frame;
|
|
}
|
|
return Symbolizer::GetOrInit()->SymbolizePC(addr);
|
|
}
|
|
|
|
ReportLocation *SymbolizeData(uptr addr) {
|
|
DataInfo info;
|
|
if (!Symbolizer::GetOrInit()->SymbolizeData(addr, &info))
|
|
return 0;
|
|
ReportLocation *ent = ReportLocation::New(ReportLocationGlobal);
|
|
internal_memcpy(&ent->global, &info, sizeof(info));
|
|
return ent;
|
|
}
|
|
|
|
void SymbolizeFlush() {
|
|
Symbolizer::GetOrInit()->Flush();
|
|
}
|
|
|
|
} // namespace __tsan
|