Ryan Macnak
e7175ac2ed
Bug: FL-238 Change-Id: Ie5e2786aeb47063ea1c534b2169b2547d6693a96 Reviewed-on: https://dart-review.googlesource.com/c/sdk/+/100200 Reviewed-by: Zach Anderson <zra@google.com> Commit-Queue: Ryan Macnak <rmacnak@google.com>
96 lines
2.6 KiB
C++
96 lines
2.6 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(HOST_OS_WINDOWS)
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#include "vm/lockers.h"
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#include "vm/native_symbol.h"
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#include "vm/os.h"
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#include "vm/os_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::Init() {
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ASSERT(running_ == false);
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if (lock_ == NULL) {
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lock_ = new Mutex();
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}
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running_ = true;
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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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}
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void NativeSymbolResolver::Cleanup() {
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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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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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}
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char* NativeSymbolResolver::LookupSymbolName(uintptr_t pc, uintptr_t* start) {
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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 (start != NULL) {
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*start = NULL;
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}
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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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DWORD64 displacement;
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BOOL r = SymFromAddr(hProcess, address, &displacement, pSymbol);
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if (r == FALSE) {
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return NULL;
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}
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if (start != NULL) {
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*start = pc - displacement;
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}
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return strdup(pSymbol->Name);
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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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bool NativeSymbolResolver::LookupSharedObject(uword pc,
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uword* dso_base,
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char** dso_name) {
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return false;
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}
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void NativeSymbolResolver::AddSymbols(const char* dso_name,
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void* buffer,
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size_t size) {
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OS::PrintErr("warning: Dart_AddSymbols has no effect on Windows\n");
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}
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} // namespace dart
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#endif // defined(HOST_OS_WINDOWS)
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