| 1 | /** @file
|
|---|
| 2 | * IPRT - Tracing.
|
|---|
| 3 | */
|
|---|
| 4 |
|
|---|
| 5 | /*
|
|---|
| 6 | * Copyright (C) 2011-2020 Oracle Corporation
|
|---|
| 7 | *
|
|---|
| 8 | * This file is part of VirtualBox Open Source Edition (OSE), as
|
|---|
| 9 | * available from http://www.virtualbox.org. This file is free software;
|
|---|
| 10 | * you can redistribute it and/or modify it under the terms of the GNU
|
|---|
| 11 | * General Public License (GPL) as published by the Free Software
|
|---|
| 12 | * Foundation, in version 2 as it comes in the "COPYING" file of the
|
|---|
| 13 | * VirtualBox OSE distribution. VirtualBox OSE is distributed in the
|
|---|
| 14 | * hope that it will be useful, but WITHOUT ANY WARRANTY of any kind.
|
|---|
| 15 | *
|
|---|
| 16 | * The contents of this file may alternatively be used under the terms
|
|---|
| 17 | * of the Common Development and Distribution License Version 1.0
|
|---|
| 18 | * (CDDL) only, as it comes in the "COPYING.CDDL" file of the
|
|---|
| 19 | * VirtualBox OSE distribution, in which case the provisions of the
|
|---|
| 20 | * CDDL are applicable instead of those of the GPL.
|
|---|
| 21 | *
|
|---|
| 22 | * You may elect to license modified versions of this file under the
|
|---|
| 23 | * terms and conditions of either the GPL or the CDDL or both.
|
|---|
| 24 | */
|
|---|
| 25 |
|
|---|
| 26 | #ifndef IPRT_INCLUDED_trace_h
|
|---|
| 27 | #define IPRT_INCLUDED_trace_h
|
|---|
| 28 | #ifndef RT_WITHOUT_PRAGMA_ONCE
|
|---|
| 29 | # pragma once
|
|---|
| 30 | #endif
|
|---|
| 31 |
|
|---|
| 32 | #include <iprt/cdefs.h>
|
|---|
| 33 | #include <iprt/types.h>
|
|---|
| 34 | #include <iprt/stdarg.h>
|
|---|
| 35 |
|
|---|
| 36 | RT_C_DECLS_BEGIN
|
|---|
| 37 |
|
|---|
| 38 | /** @defgroup grp_rt_trace RTTrace - Tracing
|
|---|
| 39 | * @ingroup grp_rt
|
|---|
| 40 | *
|
|---|
| 41 | * The tracing facility is somewhat similar to a stripped down logger that
|
|---|
| 42 | * outputs to a circular buffer. Part of the idea here is that it can the
|
|---|
| 43 | * overhead is much smaller and that it can be done without involving any
|
|---|
| 44 | * locking or other thing that could throw off timing.
|
|---|
| 45 | *
|
|---|
| 46 | * @{
|
|---|
| 47 | */
|
|---|
| 48 |
|
|---|
| 49 |
|
|---|
| 50 | #ifdef DOXYGEN_RUNNING
|
|---|
| 51 | # define RTTRACE_DISABLED
|
|---|
| 52 | # define RTTRACE_ENABLED
|
|---|
| 53 | #endif
|
|---|
| 54 |
|
|---|
| 55 | /** @def RTTRACE_DISABLED
|
|---|
| 56 | * Use this compile time define to disable all tracing macros. This trumps
|
|---|
| 57 | * RTTRACE_ENABLED.
|
|---|
| 58 | */
|
|---|
| 59 |
|
|---|
| 60 | /** @def RTTRACE_ENABLED
|
|---|
| 61 | * Use this compile time define to enable tracing when not in debug mode
|
|---|
| 62 | */
|
|---|
| 63 |
|
|---|
| 64 | /*
|
|---|
| 65 | * Determine whether tracing is enabled and forcefully normalize the indicators.
|
|---|
| 66 | */
|
|---|
| 67 | #if (defined(DEBUG) || defined(RTTRACE_ENABLED)) && !defined(RTTRACE_DISABLED)
|
|---|
| 68 | # undef RTTRACE_DISABLED
|
|---|
| 69 | # undef RTTRACE_ENABLED
|
|---|
| 70 | # define RTTRACE_ENABLED
|
|---|
| 71 | #else
|
|---|
| 72 | # undef RTTRACE_DISABLED
|
|---|
| 73 | # undef RTTRACE_ENABLED
|
|---|
| 74 | # define RTTRACE_DISABLED
|
|---|
| 75 | #endif
|
|---|
| 76 |
|
|---|
| 77 |
|
|---|
| 78 | /** @name RTTRACEBUF_FLAGS_XXX - RTTraceBufCarve and RTTraceBufCreate flags.
|
|---|
| 79 | * @{ */
|
|---|
| 80 | /** Free the memory block on release using RTMemFree(). */
|
|---|
| 81 | #define RTTRACEBUF_FLAGS_FREE_ME RT_BIT_32(0)
|
|---|
| 82 | /** Whether the trace buffer is disabled or enabled. */
|
|---|
| 83 | #define RTTRACEBUF_FLAGS_DISABLED RT_BIT_32(RTTRACEBUF_FLAGS_DISABLED_BIT)
|
|---|
| 84 | /** The bit number corresponding to the RTTRACEBUF_FLAGS_DISABLED mask. */
|
|---|
| 85 | #define RTTRACEBUF_FLAGS_DISABLED_BIT 1
|
|---|
| 86 | /** Mask of the valid flags. */
|
|---|
| 87 | #define RTTRACEBUF_FLAGS_MASK UINT32_C(0x00000003)
|
|---|
| 88 | /** @} */
|
|---|
| 89 |
|
|---|
| 90 |
|
|---|
| 91 | RTDECL(int) RTTraceBufCreate(PRTTRACEBUF hTraceBuf, uint32_t cEntries, uint32_t cbEntry, uint32_t fFlags);
|
|---|
| 92 | RTDECL(int) RTTraceBufCarve(PRTTRACEBUF hTraceBuf, uint32_t cEntries, uint32_t cbEntry, uint32_t fFlags,
|
|---|
| 93 | void *pvBlock, size_t *pcbBlock);
|
|---|
| 94 | RTDECL(uint32_t) RTTraceBufRetain(RTTRACEBUF hTraceBuf);
|
|---|
| 95 | RTDECL(uint32_t) RTTraceBufRelease(RTTRACEBUF hTraceBuf);
|
|---|
| 96 | RTDECL(int) RTTraceBufDumpToLog(RTTRACEBUF hTraceBuf);
|
|---|
| 97 | RTDECL(int) RTTraceBufDumpToAssert(RTTRACEBUF hTraceBuf);
|
|---|
| 98 |
|
|---|
| 99 | /**
|
|---|
| 100 | * Trace buffer callback for processing one entry.
|
|---|
| 101 | *
|
|---|
| 102 | * Used by RTTraceBufEnumEntries.
|
|---|
| 103 | *
|
|---|
| 104 | * @returns IPRT status code. Any status code but VINF_SUCCESS will abort the
|
|---|
| 105 | * enumeration and be returned by RTTraceBufEnumEntries.
|
|---|
| 106 | * @param hTraceBuf The trace buffer handle.
|
|---|
| 107 | * @param iEntry The entry number.
|
|---|
| 108 | * @param NanoTS The timestamp of the entry.
|
|---|
| 109 | * @param idCpu The ID of the CPU which added the entry.
|
|---|
| 110 | * @param pszMsg The message text.
|
|---|
| 111 | * @param pvUser The user argument.
|
|---|
| 112 | */
|
|---|
| 113 | typedef DECLCALLBACK(int) FNRTTRACEBUFCALLBACK(RTTRACEBUF hTraceBuf, uint32_t iEntry, uint64_t NanoTS,
|
|---|
| 114 | RTCPUID idCpu, const char *pszMsg, void *pvUser);
|
|---|
| 115 | /** Pointer to trace buffer enumeration callback function. */
|
|---|
| 116 | typedef FNRTTRACEBUFCALLBACK *PFNRTTRACEBUFCALLBACK;
|
|---|
| 117 |
|
|---|
| 118 | /**
|
|---|
| 119 | * Enumerates the used trace buffer entries, calling @a pfnCallback for each.
|
|---|
| 120 | *
|
|---|
| 121 | * @returns IPRT status code. Should the callback (@a pfnCallback) return
|
|---|
| 122 | * anything other than VINF_SUCCESS, then the enumeration will be
|
|---|
| 123 | * aborted and the status code will be returned by this function.
|
|---|
| 124 | * @retval VINF_SUCCESS
|
|---|
| 125 | * @retval VERR_INVALID_HANDLE
|
|---|
| 126 | * @retval VERR_INVALID_PARAMETER
|
|---|
| 127 | * @retval VERR_INVALID_POINTER
|
|---|
| 128 | *
|
|---|
| 129 | * @param hTraceBuf The trace buffer handle. Special handles are
|
|---|
| 130 | * accepted.
|
|---|
| 131 | * @param pfnCallback The callback to call for each entry.
|
|---|
| 132 | * @param pvUser The user argument for the callback.
|
|---|
| 133 | */
|
|---|
| 134 | RTDECL(int) RTTraceBufEnumEntries(RTTRACEBUF hTraceBuf, PFNRTTRACEBUFCALLBACK pfnCallback, void *pvUser);
|
|---|
| 135 |
|
|---|
| 136 | /**
|
|---|
| 137 | * Gets the entry size used by the specified trace buffer.
|
|---|
| 138 | *
|
|---|
| 139 | * @returns The size on success, 0 if the handle is invalid.
|
|---|
| 140 | *
|
|---|
| 141 | * @param hTraceBuf The trace buffer handle. Special handles are
|
|---|
| 142 | * accepted.
|
|---|
| 143 | */
|
|---|
| 144 | RTDECL(uint32_t) RTTraceBufGetEntrySize(RTTRACEBUF hTraceBuf);
|
|---|
| 145 |
|
|---|
| 146 | /**
|
|---|
| 147 | * Gets the number of entries in the specified trace buffer.
|
|---|
| 148 | *
|
|---|
| 149 | * @returns The entry count on success, 0 if the handle is invalid.
|
|---|
| 150 | *
|
|---|
| 151 | * @param hTraceBuf The trace buffer handle. Special handles are
|
|---|
| 152 | * accepted.
|
|---|
| 153 | */
|
|---|
| 154 | RTDECL(uint32_t) RTTraceBufGetEntryCount(RTTRACEBUF hTraceBuf);
|
|---|
| 155 |
|
|---|
| 156 |
|
|---|
| 157 | /**
|
|---|
| 158 | * Disables tracing.
|
|---|
| 159 | *
|
|---|
| 160 | * @returns @c true if tracing was enabled prior to this call, @c false if
|
|---|
| 161 | * disabled already.
|
|---|
| 162 | *
|
|---|
| 163 | * @param hTraceBuf The trace buffer handle. Special handles are
|
|---|
| 164 | * accepted.
|
|---|
| 165 | */
|
|---|
| 166 | RTDECL(bool) RTTraceBufDisable(RTTRACEBUF hTraceBuf);
|
|---|
| 167 |
|
|---|
| 168 | /**
|
|---|
| 169 | * Enables tracing.
|
|---|
| 170 | *
|
|---|
| 171 | * @returns @c true if tracing was enabled prior to this call, @c false if
|
|---|
| 172 | * disabled already.
|
|---|
| 173 | *
|
|---|
| 174 | * @param hTraceBuf The trace buffer handle. Special handles are
|
|---|
| 175 | * accepted.
|
|---|
| 176 | */
|
|---|
| 177 | RTDECL(bool) RTTraceBufEnable(RTTRACEBUF hTraceBuf);
|
|---|
| 178 |
|
|---|
| 179 |
|
|---|
| 180 | RTDECL(int) RTTraceBufAddMsg( RTTRACEBUF hTraceBuf, const char *pszMsg);
|
|---|
| 181 | RTDECL(int) RTTraceBufAddMsgF( RTTRACEBUF hTraceBuf, const char *pszMsgFmt, ...) RT_IPRT_FORMAT_ATTR(2, 3);
|
|---|
| 182 | RTDECL(int) RTTraceBufAddMsgV( RTTRACEBUF hTraceBuf, const char *pszMsgFmt, va_list va) RT_IPRT_FORMAT_ATTR(2, 0);
|
|---|
| 183 | RTDECL(int) RTTraceBufAddMsgEx( RTTRACEBUF hTraceBuf, const char *pszMsg, size_t cbMaxMsg);
|
|---|
| 184 |
|
|---|
| 185 | RTDECL(int) RTTraceBufAddPos( RTTRACEBUF hTraceBuf, RT_SRC_POS_DECL);
|
|---|
| 186 | RTDECL(int) RTTraceBufAddPosMsg( RTTRACEBUF hTraceBuf, RT_SRC_POS_DECL, const char *pszMsg);
|
|---|
| 187 | RTDECL(int) RTTraceBufAddPosMsgEx( RTTRACEBUF hTraceBuf, RT_SRC_POS_DECL, const char *pszMsg, size_t cbMaxMsg);
|
|---|
| 188 | RTDECL(int) RTTraceBufAddPosMsgF( RTTRACEBUF hTraceBuf, RT_SRC_POS_DECL, const char *pszMsgFmt, ...) RT_IPRT_FORMAT_ATTR(5, 6);
|
|---|
| 189 | RTDECL(int) RTTraceBufAddPosMsgV( RTTRACEBUF hTraceBuf, RT_SRC_POS_DECL, const char *pszMsgFmt, va_list va) RT_IPRT_FORMAT_ATTR(5, 0);
|
|---|
| 190 |
|
|---|
| 191 |
|
|---|
| 192 | RTDECL(int) RTTraceSetDefaultBuf(RTTRACEBUF hTraceBuf);
|
|---|
| 193 | RTDECL(RTTRACEBUF) RTTraceGetDefaultBuf(void);
|
|---|
| 194 |
|
|---|
| 195 |
|
|---|
| 196 | /** @def RTTRACE_BUF
|
|---|
| 197 | * The trace buffer used by the macros.
|
|---|
| 198 | */
|
|---|
| 199 | #ifndef RTTRACE_BUF
|
|---|
| 200 | # define RTTRACE_BUF NULL
|
|---|
| 201 | #endif
|
|---|
| 202 |
|
|---|
| 203 | /**
|
|---|
| 204 | * Record the current source position.
|
|---|
| 205 | */
|
|---|
| 206 | #ifdef RTTRACE_ENABLED
|
|---|
| 207 | # define RTTRACE_POS() do { RTTraceBufAddPos(RTTRACE_BUF, RT_SRC_POS); } while (0)
|
|---|
| 208 | #else
|
|---|
| 209 | # define RTTRACE_POS() do { } while (0)
|
|---|
| 210 | #endif
|
|---|
| 211 |
|
|---|
| 212 |
|
|---|
| 213 | /** @} */
|
|---|
| 214 |
|
|---|
| 215 | RT_C_DECLS_END
|
|---|
| 216 |
|
|---|
| 217 | #endif /* !IPRT_INCLUDED_trace_h */
|
|---|
| 218 |
|
|---|
