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[compiler-rt] Windows Trace Logging for error reports. 

Adds option for collecting sanitixer dumps via trace logging.
    - Set log_to_syslog=1 to enable this output.
    - Consult https://aka.ms/windowstracelogging for details on use.

llvm-svn: 355045
This commit is contained in:
Matthew G McGovern 2019-02-27 23:43:50 +00:00
parent 4fb3502bc9
commit 8edffdb4f0
2 changed files with 36 additions and 2 deletions
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4
compiler-rt/lib/sanitizer_common/sanitizer_common.h
View File

@ -804,7 +804,7 @@ enum AndroidApiLevel {
void WriteToSyslog(const char *buffer);
#if SANITIZER_MAC
#if SANITIZER_MAC || SANITIZER_WINDOWS
void LogFullErrorReport(const char *buffer);
#else
INLINE void LogFullErrorReport(const char *buffer) {}
@ -818,7 +818,7 @@ INLINE void WriteOneLineToSyslog(const char *s) {}
INLINE void LogMessageOnPrintf(const char *str) {}
#endif
#if SANITIZER_LINUX
#if SANITIZER_LINUX || SANITIZER_WINDOWS
// Initialize Android logging. Any writes before this are silently lost.
void AndroidLogInit();
void SetAbortMessage(const char *);

34
compiler-rt/lib/sanitizer_common/sanitizer_win.cc
View File

@ -20,6 +20,7 @@
#include <io.h>
#include <psapi.h>
#include <stdlib.h>
#include <TraceLoggingProvider.h>
#include "sanitizer_common.h"
#include "sanitizer_file.h"
@ -31,6 +32,13 @@
#if defined(PSAPI_VERSION) && PSAPI_VERSION == 1
#pragma comment(lib, "psapi")
#endif
// Windows trace logging provider init
#pragma comment(lib, "advapi32.lib")
TRACELOGGING_DECLARE_PROVIDER(g_asan_provider);
// GUID must be the same in utils/AddressSanitizerLoggingProvider.wprp
TRACELOGGING_DEFINE_PROVIDER(g_asan_provider, "AddressSanitizerLoggingProvider",
(0x6c6c766d, 0x3846, 0x4e6a, 0xa4, 0xfb, 0x5b,
0x53, 0x0b, 0xd0, 0xf3, 0xfa));
// A macro to tell the compiler that this part of the code cannot be reached,
// if the compiler supports this feature. Since we're using this in
@ -652,6 +660,7 @@ int Atexit(void (*function)(void)) {
}
static int RunAtexit() {
TraceLoggingUnregister(g_asan_provider);
int ret = 0;
for (uptr i = 0; i < atexit_functions.size(); ++i) {
ret |= atexit(atexit_functions[i]);
@ -749,6 +758,7 @@ uptr internal_sched_yield() {
}
void internal__exit(int exitcode) {
TraceLoggingUnregister(g_asan_provider);
// ExitProcess runs some finalizers, so use TerminateProcess to avoid that.
// The debugger doesn't stop on TerminateProcess like it does on ExitProcess,
// so add our own breakpoint here.
@ -1070,6 +1080,30 @@ u32 GetNumberOfCPUs() {
return sysinfo.dwNumberOfProcessors;
}
// TODO: Rename this project-wide to PlatformLogInit
void AndroidLogInit(void) {
HRESULT hr = TraceLoggingRegister(g_asan_provider);
if (!SUCCEEDED(hr))
return;
}
void SetAbortMessage(const char *) {}
void LogFullErrorReport(const char *buffer) {
if (common_flags()->log_to_syslog) {
InternalMmapVector<wchar_t> filename;
DWORD filename_length = 0;
do {
filename.resize(filename.size() + 0x100);
filename_length =
GetModuleFileName(NULL, filename.begin(), filename.size());
} while (filename_length >= filename.size());
TraceLoggingWrite(g_asan_provider, "AsanReportEvent",
TraceLoggingValue(filename.begin(), "ExecutableName"),
TraceLoggingValue(buffer, "AsanReportContents"));
}
}
} // namespace __sanitizer
#endif // _WIN32