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Unified Diff: net/disk_cache/blockfile/trace.cc

Issue 992733002: Remove //net (except for Android test stuff) and sdch (Closed) Base URL: git@github.com:domokit/mojo.git@master
Patch Set: Created 5 years, 9 months ago
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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
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