| Index: base/debug/profiler.h
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| diff --git a/base/debug/profiler.h b/base/debug/profiler.h
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| deleted file mode 100644
|
| index 2920d8a2fbe33f6328a4f6d17d3aa596ac53e0e3..0000000000000000000000000000000000000000
|
| --- a/base/debug/profiler.h
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| +++ /dev/null
|
| @@ -1,90 +0,0 @@
|
| -// Copyright (c) 2012 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.
|
| -
|
| -#ifndef BASE_DEBUG_PROFILER_H_
|
| -#define BASE_DEBUG_PROFILER_H_
|
| -
|
| -#include <string>
|
| -
|
| -#include "base/base_export.h"
|
| -#include "base/basictypes.h"
|
| -
|
| -// The Profiler functions allow usage of the underlying sampling based
|
| -// profiler. If the application has not been built with the necessary
|
| -// flags (-DENABLE_PROFILING and not -DNO_TCMALLOC) then these functions
|
| -// are noops.
|
| -namespace base {
|
| -namespace debug {
|
| -
|
| -// Start profiling with the supplied name.
|
| -// {pid} will be replaced by the process' pid and {count} will be replaced
|
| -// by the count of the profile run (starts at 1 with each process).
|
| -BASE_EXPORT void StartProfiling(const std::string& name);
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| -
|
| -// Stop profiling and write out data.
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| -BASE_EXPORT void StopProfiling();
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| -
|
| -// Force data to be written to file.
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| -BASE_EXPORT void FlushProfiling();
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| -
|
| -// Returns true if process is being profiled.
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| -BASE_EXPORT bool BeingProfiled();
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| -
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| -// Reset profiling after a fork, which disables timers.
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| -BASE_EXPORT void RestartProfilingAfterFork();
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| -
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| -// Returns true iff this executable is instrumented with the Syzygy profiler.
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| -BASE_EXPORT bool IsBinaryInstrumented();
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| -
|
| -// There's a class of profilers that use "return address swizzling" to get a
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| -// hook on function exits. This class of profilers uses some form of entry hook,
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| -// like e.g. binary instrumentation, or a compiler flag, that calls a hook each
|
| -// time a function is invoked. The hook then switches the return address on the
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| -// stack for the address of an exit hook function, and pushes the original
|
| -// return address to a shadow stack of some type. When in due course the CPU
|
| -// executes a return to the exit hook, the exit hook will do whatever work it
|
| -// does on function exit, then arrange to return to the original return address.
|
| -// This class of profiler does not play well with programs that look at the
|
| -// return address, as does e.g. V8. V8 uses the return address to certain
|
| -// runtime functions to find the JIT code that called it, and from there finds
|
| -// the V8 data structures associated to the JS function involved.
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| -// A return address resolution function is used to fix this. It allows such
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| -// programs to resolve a location on stack where a return address originally
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| -// resided, to the shadow stack location where the profiler stashed it.
|
| -typedef uintptr_t (*ReturnAddressLocationResolver)(
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| - uintptr_t return_addr_location);
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| -
|
| -// This type declaration must match V8's FunctionEntryHook.
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| -typedef void (*DynamicFunctionEntryHook)(uintptr_t function,
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| - uintptr_t return_addr_location);
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| -
|
| -// The functions below here are to support profiling V8-generated code.
|
| -// V8 has provisions for generating a call to an entry hook for newly generated
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| -// JIT code, and it can push symbol information on code generation and advise
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| -// when the garbage collector moves code. The functions declarations below here
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| -// make glue between V8's facilities and a profiler.
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| -
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| -// This type declaration must match V8's FunctionEntryHook.
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| -typedef void (*DynamicFunctionEntryHook)(uintptr_t function,
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| - uintptr_t return_addr_location);
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| -
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| -typedef void (*AddDynamicSymbol)(const void* address,
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| - size_t length,
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| - const char* name,
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| - size_t name_len);
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| -typedef void (*MoveDynamicSymbol)(const void* address, const void* new_address);
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| -
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| -
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| -// If this binary is instrumented and the instrumentation supplies a function
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| -// for each of those purposes, find and return the function in question.
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| -// Otherwise returns NULL.
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| -BASE_EXPORT ReturnAddressLocationResolver GetProfilerReturnAddrResolutionFunc();
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| -BASE_EXPORT DynamicFunctionEntryHook GetProfilerDynamicFunctionEntryHookFunc();
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| -BASE_EXPORT AddDynamicSymbol GetProfilerAddDynamicSymbolFunc();
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| -BASE_EXPORT MoveDynamicSymbol GetProfilerMoveDynamicSymbolFunc();
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| -
|
| -} // namespace debug
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| -} // namespace base
|
| -
|
| -#endif // BASE_DEBUG_PROFILER_H_
|
|
|