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//===-- tsan_report.cc ----------------------------------------------------===//
//
// 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.
//
//===----------------------------------------------------------------------===//
#include "tsan_report.h"
#include "tsan_platform.h"
#include "tsan_rtl.h"
namespace __tsan {
ReportDesc::ReportDesc()
: stacks(MBlockReportStack)
, mops(MBlockReportMop)
, locs(MBlockReportLoc)
, mutexes(MBlockReportMutex)
, threads(MBlockReportThread)
, sleep() {
}
ReportDesc::~ReportDesc() {
}
#ifndef TSAN_GO
static void PrintHeader(ReportType typ) {
Printf("WARNING: ThreadSanitizer: ");
if (typ == ReportTypeRace)
Printf("data race");
else if (typ == ReportTypeUseAfterFree)
Printf("heap-use-after-free");
else if (typ == ReportTypeThreadLeak)
Printf("thread leak");
else if (typ == ReportTypeMutexDestroyLocked)
Printf("destroy of a locked mutex");
else if (typ == ReportTypeSignalUnsafe)
Printf("signal-unsafe call inside of a signal");
else if (typ == ReportTypeErrnoInSignal)
Printf("signal handler spoils errno");
Printf(" (pid=%d)\n", GetPid());
}
void PrintStack(const ReportStack *ent) {
if (ent == 0) {
Printf(" [failed to restore the stack]\n\n");
return;
}
for (int i = 0; ent; ent = ent->next, i++) {
Printf(" #%d %s %s:%d", i, ent->func, ent->file, ent->line);
if (ent->col)
Printf(":%d", ent->col);
if (ent->module && ent->offset)
Printf(" (%s+%p)\n", ent->module, (void*)ent->offset);
else
Printf(" (%p)\n", (void*)ent->pc);
}
Printf("\n");
}
static void PrintMop(const ReportMop *mop, bool first) {
Printf(" %s of size %d at %p",
(first ? (mop->write ? "Write" : "Read")
: (mop->write ? "Previous write" : "Previous read")),
mop->size, (void*)mop->addr);
if (mop->tid == 0)
Printf(" by main thread:\n");
else
Printf(" by thread %d:\n", mop->tid);
PrintStack(mop->stack);
}
static void PrintLocation(const ReportLocation *loc) {
if (loc->type == ReportLocationGlobal) {
Printf(" Location is global '%s' of size %zu at %zx %s:%d\n",
loc->name, loc->size, loc->addr, loc->file, loc->line);
} else if (loc->type == ReportLocationHeap) {
Printf(" Location is heap block of size %zu at %p allocated",
loc->size, loc->addr);
if (loc->tid == 0)
Printf(" by main thread:\n");
else
Printf(" by thread %d:\n", loc->tid);
PrintStack(loc->stack);
} else if (loc->type == ReportLocationStack) {
Printf(" Location is stack of thread %d:\n", loc->tid);
}
}
static void PrintMutex(const ReportMutex *rm) {
if (rm->stack == 0)
return;
Printf(" Mutex %d created at:\n", rm->id);
PrintStack(rm->stack);
}
static void PrintThread(const ReportThread *rt) {
if (rt->id == 0) // Little sense in describing the main thread.
return;
Printf(" Thread %d", rt->id);
if (rt->name)
Printf(" '%s'", rt->name);
Printf(" (tid=%zu, %s)", rt->pid, rt->running ? "running" : "finished");
if (rt->stack)
Printf(" created at:");
Printf("\n");
PrintStack(rt->stack);
}
static void PrintSleep(const ReportStack *s) {
Printf(" As if synchronized via sleep:\n");
PrintStack(s);
}
void PrintReport(const ReportDesc *rep) {
Printf("==================\n");
PrintHeader(rep->typ);
for (uptr i = 0; i < rep->stacks.Size(); i++) {
if (i)
Printf(" and:\n");
PrintStack(rep->stacks[i]);
}
for (uptr i = 0; i < rep->mops.Size(); i++)
PrintMop(rep->mops[i], i == 0);
if (rep->sleep)
PrintSleep(rep->sleep);
for (uptr i = 0; i < rep->locs.Size(); i++)
PrintLocation(rep->locs[i]);
for (uptr i = 0; i < rep->mutexes.Size(); i++)
PrintMutex(rep->mutexes[i]);
for (uptr i = 0; i < rep->threads.Size(); i++)
PrintThread(rep->threads[i]);
Printf("==================\n");
}
#else
void PrintStack(const ReportStack *ent) {
for (int i = 0; ent; ent = ent->next, i++) {
Printf(" %s()\n %s:%d +0x%zx\n",
ent->func, ent->file, ent->line, (void*)ent->offset);
}
Printf("\n");
}
static void PrintMop(const ReportMop *mop, bool first) {
Printf("%s by goroutine %d:\n",
(first ? (mop->write ? "Write" : "Read")
: (mop->write ? "Previous write" : "Previous read")),
mop->tid);
PrintStack(mop->stack);
}
static void PrintThread(const ReportThread *rt) {
if (rt->id == 0) // Little sense in describing the main thread.
return;
Printf("Goroutine %d (%s) created at:\n",
rt->id, rt->running ? "running" : "finished");
PrintStack(rt->stack);
}
void PrintReport(const ReportDesc *rep) {
Printf("==================\n");
Printf("WARNING: DATA RACE\n");
for (uptr i = 0; i < rep->mops.Size(); i++)
PrintMop(rep->mops[i], i == 0);
for (uptr i = 0; i < rep->threads.Size(); i++)
PrintThread(rep->threads[i]);
Printf("==================\n");
}
#endif
} // namespace __tsan
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