bsimmers
6aa6d171e1
These were all added while debugging an xls issue and they seem generally useful. Reviewed By: @edwinsmith Differential Revision: D1132041
91 linhas
2.5 KiB
C++
91 linhas
2.5 KiB
C++
/*
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+----------------------------------------------------------------------+
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| HipHop for PHP |
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+----------------------------------------------------------------------+
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| Copyright (c) 2010-2013 Facebook, Inc. (http://www.facebook.com) |
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+----------------------------------------------------------------------+
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| This source file is subject to version 3.01 of the PHP license, |
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| that is bundled with this package in the file LICENSE, and is |
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| available through the world-wide-web at the following url: |
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| http://www.php.net/license/3_01.txt |
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| If you did not receive a copy of the PHP license and are unable to |
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| obtain it through the world-wide-web, please send a note to |
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| license@php.net so we can mail you a copy immediately. |
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+----------------------------------------------------------------------+
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*/
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#ifndef incl_HPHP_RINGBUFFER_H_
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#define incl_HPHP_RINGBUFFER_H_
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#include <cstdlib>
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#include <cstdarg>
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#include <cinttypes>
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#include <atomic>
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#include "hphp/util/portability.h"
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namespace HPHP {
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namespace Trace {
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#define RBTYPES \
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RBTYPE(Uninit) \
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RBTYPE(Msg) \
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RBTYPE(SideExit) \
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RBTYPE(EnterTC) \
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RBTYPE(TraceletBody) \
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RBTYPE(TraceletGuards) \
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RBTYPE(FuncEntry) \
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RBTYPE(FuncExit) \
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RBTYPE(FuncPrologueTry) \
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RBTYPE(BytecodeStart)
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enum RingBufferType : uint8_t {
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#define RBTYPE(x) RBType ## x,
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RBTYPES
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#undef RBTYPE
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};
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/*
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* Thread-shared, binary ringbuffer. Includes thread-private ASCII ringbuffers
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* by reference. Beware that very old ASCII entries can be corrupt; still, this
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* is better than nothing.
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*/
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struct RingBufferEntry {
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// 0 - 15
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union {
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struct {
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uint64_t m_sk;
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uint64_t m_data;
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};
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struct {
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const char* m_msg;
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uint32_t m_len;
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};
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};
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// 16-23
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uint32_t m_threadId;
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uint32_t m_seq; // sequence number
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// 24 - 31
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RingBufferType m_type;
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};
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static_assert(sizeof(RingBufferEntry) == 32,
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"RingBufferEntry expected to be 32 bytes");
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constexpr unsigned kMaxRBEntries = (1 << 20); // Must exceed number of threads
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extern RingBufferEntry g_ring[];
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extern std::atomic<int> g_ringIdx;
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const char* ringbufferName(RingBufferType t);
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void vtraceRingbuffer(const char* fmt, va_list ap) ATTRIBUTE_PRINTF(1,0);
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void ringbufferMsg(const char* msg, size_t msgLen,
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RingBufferType t = RBTypeMsg);
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void ringbufferEntry(RingBufferType t, uint64_t sk, uint64_t data);
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}
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}
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#endif
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