| Index: net/disk_cache/blockfile/trace.cc
|
| diff --git a/net/disk_cache/blockfile/trace.cc b/net/disk_cache/blockfile/trace.cc
|
| deleted file mode 100644
|
| index 7f21e2f7609aa5927a34609908a0a9a60f32442c..0000000000000000000000000000000000000000
|
| --- a/net/disk_cache/blockfile/trace.cc
|
| +++ /dev/null
|
| @@ -1,192 +0,0 @@
|
| -// Copyright (c) 2011 The Chromium Authors. All rights reserved.
|
| -// Use of this source code is governed by a BSD-style license that can be
|
| -// found in the LICENSE file.
|
| -
|
| -#include "net/disk_cache/blockfile/trace.h"
|
| -
|
| -#include <stdio.h>
|
| -#if defined(OS_WIN)
|
| -#include <windows.h>
|
| -#endif
|
| -
|
| -#include "base/lazy_instance.h"
|
| -#include "base/logging.h"
|
| -#include "base/synchronization/lock.h"
|
| -#include "net/disk_cache/blockfile/stress_support.h"
|
| -
|
| -// Change this value to 1 to enable tracing on a release build. By default,
|
| -// tracing is enabled only on debug builds.
|
| -#define ENABLE_TRACING 0
|
| -
|
| -#ifndef NDEBUG
|
| -#undef ENABLE_TRACING
|
| -#define ENABLE_TRACING 1
|
| -#endif
|
| -
|
| -namespace {
|
| -
|
| -const int kEntrySize = 12 * sizeof(size_t);
|
| -#if defined(NET_BUILD_STRESS_CACHE)
|
| -const int kNumberOfEntries = 500000;
|
| -#else
|
| -const int kNumberOfEntries = 5000; // 240 KB on 32bit, 480 KB on 64bit
|
| -#endif
|
| -
|
| -bool s_trace_enabled = false;
|
| -base::LazyInstance<base::Lock>::Leaky s_lock = LAZY_INSTANCE_INITIALIZER;
|
| -
|
| -struct TraceBuffer {
|
| - int num_traces;
|
| - int current;
|
| - char buffer[kNumberOfEntries][kEntrySize];
|
| -};
|
| -
|
| -#if ENABLE_TRACING
|
| -void DebugOutput(const char* msg) {
|
| -#if defined(OS_WIN)
|
| - OutputDebugStringA(msg);
|
| -#else
|
| - NOTIMPLEMENTED();
|
| -#endif
|
| -}
|
| -#endif // ENABLE_TRACING
|
| -
|
| -} // namespace
|
| -
|
| -namespace disk_cache {
|
| -
|
| -// s_trace_buffer and s_trace_object are not singletons because I want the
|
| -// buffer to be destroyed and re-created when the last user goes away, and it
|
| -// must be straightforward to access the buffer from the debugger.
|
| -static TraceObject* s_trace_object = NULL;
|
| -
|
| -// Static.
|
| -TraceObject* TraceObject::GetTraceObject() {
|
| - base::AutoLock lock(s_lock.Get());
|
| -
|
| - if (s_trace_object)
|
| - return s_trace_object;
|
| -
|
| - s_trace_object = new TraceObject();
|
| - return s_trace_object;
|
| -}
|
| -
|
| -TraceObject::TraceObject() {
|
| - InitTrace();
|
| -}
|
| -
|
| -TraceObject::~TraceObject() {
|
| - DestroyTrace();
|
| -}
|
| -
|
| -void TraceObject::EnableTracing(bool enable) {
|
| - base::AutoLock lock(s_lock.Get());
|
| - s_trace_enabled = enable;
|
| -}
|
| -
|
| -#if ENABLE_TRACING
|
| -
|
| -static TraceBuffer* s_trace_buffer = NULL;
|
| -
|
| -void InitTrace(void) {
|
| - s_trace_enabled = true;
|
| - if (s_trace_buffer)
|
| - return;
|
| -
|
| - s_trace_buffer = new TraceBuffer;
|
| - memset(s_trace_buffer, 0, sizeof(*s_trace_buffer));
|
| -}
|
| -
|
| -void DestroyTrace(void) {
|
| - base::AutoLock lock(s_lock.Get());
|
| -
|
| - delete s_trace_buffer;
|
| - s_trace_buffer = NULL;
|
| - s_trace_object = NULL;
|
| -}
|
| -
|
| -void Trace(const char* format, ...) {
|
| - if (!s_trace_buffer || !s_trace_enabled)
|
| - return;
|
| -
|
| - va_list ap;
|
| - va_start(ap, format);
|
| - char line[kEntrySize + 2];
|
| -
|
| -#if defined(OS_WIN)
|
| - vsprintf_s(line, format, ap);
|
| -#else
|
| - vsnprintf(line, kEntrySize, format, ap);
|
| -#endif
|
| -
|
| -#if defined(DISK_CACHE_TRACE_TO_LOG)
|
| - line[kEntrySize] = '\0';
|
| - LOG(INFO) << line;
|
| -#endif
|
| -
|
| - va_end(ap);
|
| -
|
| - {
|
| - base::AutoLock lock(s_lock.Get());
|
| - if (!s_trace_buffer || !s_trace_enabled)
|
| - return;
|
| -
|
| - memcpy(s_trace_buffer->buffer[s_trace_buffer->current], line, kEntrySize);
|
| -
|
| - s_trace_buffer->num_traces++;
|
| - s_trace_buffer->current++;
|
| - if (s_trace_buffer->current == kNumberOfEntries)
|
| - s_trace_buffer->current = 0;
|
| - }
|
| -}
|
| -
|
| -// Writes the last num_traces to the debugger output.
|
| -void DumpTrace(int num_traces) {
|
| - DCHECK(s_trace_buffer);
|
| - DebugOutput("Last traces:\n");
|
| -
|
| - if (num_traces > kNumberOfEntries || num_traces < 0)
|
| - num_traces = kNumberOfEntries;
|
| -
|
| - if (s_trace_buffer->num_traces) {
|
| - char line[kEntrySize + 2];
|
| -
|
| - int current = s_trace_buffer->current - num_traces;
|
| - if (current < 0)
|
| - current += kNumberOfEntries;
|
| -
|
| - for (int i = 0; i < num_traces; i++) {
|
| - memcpy(line, s_trace_buffer->buffer[current], kEntrySize);
|
| - line[kEntrySize] = '\0';
|
| - size_t length = strlen(line);
|
| - if (length) {
|
| - line[length] = '\n';
|
| - line[length + 1] = '\0';
|
| - DebugOutput(line);
|
| - }
|
| -
|
| - current++;
|
| - if (current == kNumberOfEntries)
|
| - current = 0;
|
| - }
|
| - }
|
| -
|
| - DebugOutput("End of Traces\n");
|
| -}
|
| -
|
| -#else // ENABLE_TRACING
|
| -
|
| -void InitTrace(void) {
|
| - return;
|
| -}
|
| -
|
| -void DestroyTrace(void) {
|
| - s_trace_object = NULL;
|
| -}
|
| -
|
| -void Trace(const char* format, ...) {
|
| -}
|
| -
|
| -#endif // ENABLE_TRACING
|
| -
|
| -} // namespace disk_cache
|
|
|