johnmccutchan@google.com
919dc2d6eb
* Threads can only register and unregister themselves with ThreadInterrupter. * Profiler is no longer involved in interrupting threads. It's just a callback and the buffer. * Profiler operates lock free using an atomic operation to reserve sample in sample buffer. * Linux, Mac, and Windows done. R=asiva@google.com Review URL: https://codereview.chromium.org//109803002 git-svn-id: https://dart.googlecode.com/svn/branches/bleeding_edge/dart@31170 260f80e4-7a28-3924-810f-c04153c831b5
84 lines
2.0 KiB
C++
84 lines
2.0 KiB
C++
// Copyright (c) 2013, the Dart project authors. Please see the AUTHORS file
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// for details. All rights reserved. Use of this source code is governed by a
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// BSD-style license that can be found in the LICENSE file.
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#include "vm/globals.h"
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#if defined(TARGET_OS_WINDOWS)
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#include "vm/native_symbol.h"
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#include "vm/thread.h"
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#include <dbghelp.h> // NOLINT
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namespace dart {
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static bool running_ = false;
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static Mutex* lock_ = NULL;
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void NativeSymbolResolver::InitOnce() {
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ASSERT(running_ == false);
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lock_ = new Mutex();
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running_ = true;
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#if 0
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SymSetOptions(SYMOPT_UNDNAME | SYMOPT_DEFERRED_LOADS);
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HANDLE hProcess = GetCurrentProcess();
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if (!SymInitialize(hProcess, NULL, TRUE)) {
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DWORD error = GetLastError();
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printf("Failed to init NativeSymbolResolver (SymInitialize %d)\n", error);
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return;
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}
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#endif
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}
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void NativeSymbolResolver::ShutdownOnce() {
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MutexLocker lock(lock_);
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if (!running_) {
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return;
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}
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running_ = false;
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#if 0
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HANDLE hProcess = GetCurrentProcess();
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if (!SymCleanup(hProcess)) {
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DWORD error = GetLastError();
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printf("Failed to shutdown NativeSymbolResolver (SymCleanup %d)\n", error);
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}
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#endif
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}
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char* NativeSymbolResolver::LookupSymbolName(uintptr_t pc) {
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static const intptr_t kMaxNameLength = 2048;
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static const intptr_t kSymbolInfoSize = sizeof(SYMBOL_INFO); // NOLINT.
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static char buffer[kSymbolInfoSize + kMaxNameLength];
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static char name_buffer[kMaxNameLength];
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MutexLocker lock(lock_);
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if (!running_) {
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return NULL;
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}
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#if 0
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memset(&buffer[0], 0, sizeof(buffer));
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HANDLE hProcess = GetCurrentProcess();
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DWORD64 address = static_cast<DWORD64>(pc);
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PSYMBOL_INFO pSymbol = reinterpret_cast<PSYMBOL_INFO>(&buffer[0]);
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pSymbol->SizeOfStruct = kSymbolInfoSize;
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pSymbol->MaxNameLen = kMaxNameLength;
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BOOL r = SymFromAddr(hProcess, address, NULL, pSymbol);
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if (r == FALSE) {
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return NULL;
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}
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return strdup(pSymbol->Name);
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#endif
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return NULL;
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}
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void NativeSymbolResolver::FreeSymbolName(char* name) {
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free(name);
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}
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} // namespace dart
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#endif // defined(TARGET_OS_WINDOWS)
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