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//===-- tsan_debugging.cc -------------------------------------------------===//
//
// The LLVM Compiler Infrastructure
//
// This file is distributed under the University of Illinois Open Source
// License. See LICENSE.TXT for details.
//
//===----------------------------------------------------------------------===//
//
// This file is a part of ThreadSanitizer (TSan), a race detector.
//
// TSan debugging API implementation.
//===----------------------------------------------------------------------===//
#include "tsan_interface.h"
#include "tsan_report.h"
#include "tsan_rtl.h"
using namespace __tsan;
static const char *ReportTypeDescription(ReportType typ) {
if (typ == ReportTypeRace) return "data-race";
if (typ == ReportTypeVptrRace) return "data-race-vptr";
if (typ == ReportTypeUseAfterFree) return "heap-use-after-free";
if (typ == ReportTypeVptrUseAfterFree) return "heap-use-after-free-vptr";
if (typ == ReportTypeThreadLeak) return "thread-leak";
if (typ == ReportTypeMutexDestroyLocked) return "locked-mutex-destroy";
if (typ == ReportTypeMutexDoubleLock) return "mutex-double-lock";
if (typ == ReportTypeMutexInvalidAccess) return "mutex-invalid-access";
if (typ == ReportTypeMutexBadUnlock) return "mutex-bad-unlock";
if (typ == ReportTypeMutexBadReadLock) return "mutex-bad-read-lock";
if (typ == ReportTypeMutexBadReadUnlock) return "mutex-bad-read-unlock";
if (typ == ReportTypeSignalUnsafe) return "signal-unsafe-call";
if (typ == ReportTypeErrnoInSignal) return "errno-in-signal-handler";
if (typ == ReportTypeDeadlock) return "lock-order-inversion";
return "";
}
static const char *ReportLocationTypeDescription(ReportLocationType typ) {
if (typ == ReportLocationGlobal) return "global";
if (typ == ReportLocationHeap) return "heap";
if (typ == ReportLocationStack) return "stack";
if (typ == ReportLocationTLS) return "tls";
if (typ == ReportLocationFD) return "fd";
return "";
}
static void CopyTrace(SymbolizedStack *first_frame, void **trace,
uptr trace_size) {
uptr i = 0;
for (SymbolizedStack *frame = first_frame; frame != nullptr;
frame = frame->next) {
trace[i++] = (void *)frame->info.address;
if (i >= trace_size) break;
}
}
// Meant to be called by the debugger.
SANITIZER_INTERFACE_ATTRIBUTE
void *__tsan_get_current_report() {
const ReportDesc *rep = cur_thread()->current_report;
return (void *)rep;
}
SANITIZER_INTERFACE_ATTRIBUTE
int __tsan_get_report_data(void *report, const char **description, int *count,
int *stack_count, int *mop_count, int *loc_count,
int *mutex_count, int *thread_count,
int *unique_tid_count, void **sleep_trace,
uptr trace_size) {
const ReportDesc *rep = (ReportDesc *)report;
*description = ReportTypeDescription(rep->typ);
*count = rep->count;
*stack_count = rep->stacks.Size();
*mop_count = rep->mops.Size();
*loc_count = rep->locs.Size();
*mutex_count = rep->mutexes.Size();
*thread_count = rep->threads.Size();
*unique_tid_count = rep->unique_tids.Size();
if (rep->sleep) CopyTrace(rep->sleep->frames, sleep_trace, trace_size);
return 1;
}
SANITIZER_INTERFACE_ATTRIBUTE
int __tsan_get_report_stack(void *report, uptr idx, void **trace,
uptr trace_size) {
const ReportDesc *rep = (ReportDesc *)report;
CHECK_LT(idx, rep->stacks.Size());
ReportStack *stack = rep->stacks[idx];
if (stack) CopyTrace(stack->frames, trace, trace_size);
return stack ? 1 : 0;
}
SANITIZER_INTERFACE_ATTRIBUTE
int __tsan_get_report_mop(void *report, uptr idx, int *tid, void **addr,
int *size, int *write, int *atomic, void **trace,
uptr trace_size) {
const ReportDesc *rep = (ReportDesc *)report;
CHECK_LT(idx, rep->mops.Size());
ReportMop *mop = rep->mops[idx];
*tid = mop->tid;
*addr = (void *)mop->addr;
*size = mop->size;
*write = mop->write ? 1 : 0;
*atomic = mop->atomic ? 1 : 0;
if (mop->stack) CopyTrace(mop->stack->frames, trace, trace_size);
return 1;
}
SANITIZER_INTERFACE_ATTRIBUTE
int __tsan_get_report_loc(void *report, uptr idx, const char **type,
void **addr, uptr *start, uptr *size, int *tid,
int *fd, int *suppressable, void **trace,
uptr trace_size) {
const ReportDesc *rep = (ReportDesc *)report;
CHECK_LT(idx, rep->locs.Size());
ReportLocation *loc = rep->locs[idx];
*type = ReportLocationTypeDescription(loc->type);
*addr = (void *)loc->global.start;
*start = loc->heap_chunk_start;
*size = loc->heap_chunk_size;
*tid = loc->tid;
*fd = loc->fd;
*suppressable = loc->suppressable;
if (loc->stack) CopyTrace(loc->stack->frames, trace, trace_size);
return 1;
}
SANITIZER_INTERFACE_ATTRIBUTE
int __tsan_get_report_mutex(void *report, uptr idx, uptr *mutex_id, void **addr,
int *destroyed, void **trace, uptr trace_size) {
const ReportDesc *rep = (ReportDesc *)report;
CHECK_LT(idx, rep->mutexes.Size());
ReportMutex *mutex = rep->mutexes[idx];
*mutex_id = mutex->id;
*addr = (void *)mutex->addr;
*destroyed = mutex->destroyed;
if (mutex->stack) CopyTrace(mutex->stack->frames, trace, trace_size);
return 1;
}
SANITIZER_INTERFACE_ATTRIBUTE
int __tsan_get_report_thread(void *report, uptr idx, int *tid, uptr *os_id,
int *running, const char **name, int *parent_tid,
void **trace, uptr trace_size) {
const ReportDesc *rep = (ReportDesc *)report;
CHECK_LT(idx, rep->threads.Size());
ReportThread *thread = rep->threads[idx];
*tid = thread->id;
*os_id = thread->os_id;
*running = thread->running;
*name = thread->name;
*parent_tid = thread->parent_tid;
if (thread->stack) CopyTrace(thread->stack->frames, trace, trace_size);
return 1;
}
SANITIZER_INTERFACE_ATTRIBUTE
int __tsan_get_report_unique_tid(void *report, uptr idx, int *tid) {
const ReportDesc *rep = (ReportDesc *)report;
CHECK_LT(idx, rep->unique_tids.Size());
*tid = rep->unique_tids[idx];
return 1;
}
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