include/profiling.h

   1
   2 #ifndef _PROFILING_H_
   3 #define _PROFILING_H_
   4
   5 #include "config.h"
   6
   7 /* forward decls (C++ only) */
   8 #if __cplusplus
   9
  10 class CacheManager;
  11 #endif
  12
  13 #ifdef USE_XPROF_STATS
  14
  15 #if !defined(_SQUID_SOLARIS_)
  16 typedef int64_t  hrtime_t;
  17 #else
  18 #include <sys/time.h>
  19 #endif
  20
  21 #if defined(__i386) || defined(__i386__)
  22 static inline hrtime_t
  23 get_tick(void)
  24 {
  25     hrtime_t regs;
  26
  27 asm volatile ("rdtsc":"=A" (regs));
  28     return regs;
  29     /* We need return value, we rely on CC to optimise out needless subf calls */
  30     /* Note that "rdtsc" is relatively slow OP and stalls the CPU pipes, so use it wisely */
  31 }
  32
  33 #elif defined(__x86_64) || defined(__x86_64__)
  34 static inline hrtime_t
  35 get_tick(void)
  36 {
  37     uint32_t lo, hi;
  38     // Based on an example in Wikipedia
  39     /* We cannot use "=A", since this would use %rax on x86_64 */
  40     asm volatile ("rdtsc" : "=a" (lo), "=d" (hi));
  41     return (hrtime_t)hi << 32 | lo;
  42 }
  43
  44 #elif defined(__alpha)
  45 static inline hrtime_t
  46 get_tick(void)
  47 {
  48     hrtime_t regs;
  49
  50 asm volatile ("rpcc %0" : "=r" (regs));
  51     return regs;
  52 }
  53
  54 #elif defined(_M_IX86) && defined(_MSC_VER) /* x86 platform on Microsoft C Compiler ONLY */
  55 static __inline hrtime_t
  56 get_tick(void)
  57 {
  58     hrtime_t regs;
  59
  60     __asm {
  61         cpuid
  62         rdtsc
  63         mov eax,DWORD PTR regs[0]
  64         mov edx,DWORD PTR regs[4]
  65     }
  66     return regs;
  67 }
  68
  69 #else
  70 #warning Unsupported CPU. Define function get_tick(). Disabling USE_XPROF_STATS...
  71 #undef USE_XPROF_STATS
  72 #endif
  73
  74 #endif /* USE_XPROF_STATS - maybe disabled above */
  75
  76 #ifdef USE_XPROF_STATS
  77
  78 typedef enum {
  79     XPROF_PROF_UNACCOUNTED,
  80     XPROF_PROF_OVERHEAD,
  81     XPROF_hash_lookup,
  82     XPROF_splay_splay,
  83     XPROF_xmalloc,
  84     XPROF_malloc,
  85     XPROF_xfree,
  86     XPROF_xxfree,
  87     XPROF_xrealloc,
  88     XPROF_xcalloc,
  89     XPROF_calloc,
  90     XPROF_xstrdup,
  91     XPROF_xstrndup,
  92     XPROF_xstrncpy,
  93     XPROF_xcountws,
  94     XPROF_socket,
  95     XPROF_read,
  96     XPROF_write,
  97     XPROF_send,
  98     XPROF_recv,
  99     XPROF_sendto,
 100     XPROF_recvfrom,
 101     XPROF_accept,
 102     XPROF_connect,
 103     XPROF_memPoolChunkNew,
 104     XPROF_memPoolAlloc,
 105     XPROF_memPoolFree,
 106     XPROF_memPoolClean,
 107     XPROF_aclMatchAclList,
 108     XPROF_aclCheckFast,
 109     XPROF_comm_open,
 110     XPROF_comm_connect_addr,
 111     XPROF_comm_accept,
 112     XPROF_comm_close,
 113     XPROF_comm_udp_sendto,
 114     XPROF_commHandleWrite,
 115     XPROF_comm_check_incoming,
 116     XPROF_comm_poll_prep_pfds,
 117     XPROF_comm_poll_normal,
 118     XPROF_comm_handle_ready_fd,
 119     XPROF_comm_read_handler,
 120     XPROF_comm_write_handler,
 121     XPROF_storeGet,
 122     XPROF_storeMaintainSwapSpace,
 123     XPROF_storeRelease,
 124     XPROF_diskHandleWrite,
 125     XPROF_diskHandleRead,
 126     XPROF_file_open,
 127     XPROF_file_read,
 128     XPROF_file_write,
 129     XPROF_file_close,
 130 #if USE_SQUID_ESI
 131     XPROF_esiExpressionEval,
 132     XPROF_esiProcessing,
 133     XPROF_esiParsing,
 134 #endif
 135     XPROF_storeClient_kickReads,
 136     XPROF_eventRun,
 137     XPROF_storeDirCallback,
 138     XPROF_comm_calliocallback,
 139     XPROF_CommReadCallbackData_callCallback,
 140     XPROF_CommAcceptCallbackData_callCallback,
 141     XPROF_CommWriteCallbackData_callCallback,
 142     XPROF_CommFillCallbackData_callCallback,
 143     XPROF_HttpStateData_readReply,
 144     XPROF_HttpStateData_processReplyBody,
 145     XPROF_StoreEntry_write,
 146     XPROF_storeGetMemSpace,
 147     XPROF_MemObject_write,
 148     XPROF_storeWriteComplete,
 149     XPROF_mem_hdr_write,
 150     XPROF_headersEnd,
 151     XPROF_parseHttpRequest,
 152     XPROF_HttpStateData_processReplyHeader,
 153     XPROF_MemBuf_consume,
 154     XPROF_MemBuf_append,
 155     XPROF_MemBuf_grow,
 156     XPROF_InvokeHandlers,
 157     XPROF_HttpMsg_httpMsgParseStep,
 158     XPROF_EventDispatcher_dispatch,
 159     XPROF_SignalEngine_checkEvents,
 160     XPROF_Temp1,
 161     XPROF_Temp2,
 162     XPROF_Temp3,
 163     XPROF_clientSocketRecipient,
 164     XPROF_httpStart,
 165     XPROF_HttpParserParseReqLine,
 166     XPROF_httpRequestFree,
 167     XPROF_HttpHeaderParse,
 168     XPROF_HttpHeaderClean,
 169     XPROF_StringInitBuf,
 170     XPROF_StringAllocAndFill,
 171     XPROF_StringClean,
 172     XPROF_StringReset,
 173     XPROF_StringAppend,
 174     XPROF_HttpHeader_findEntry,
 175     XPROF_HttpHeader_getCc,
 176     XPROF_HttpHeader_getRange,
 177     XPROF_checkTimeouts,
 178     XPROF_CommSelect,
 179     XPROF_LAST
 180 } xprof_type;
 181
 182 #define XP_NOBEST (hrtime_t)-1
 183
 184 typedef struct _xprof_stats_node xprof_stats_node;
 185
 186 typedef struct _xprof_stats_data xprof_stats_data;
 187
 188 struct _xprof_stats_data
 189 {
 190     hrtime_t start;
 191     hrtime_t stop;
 192     hrtime_t delta;
 193     hrtime_t best;
 194     hrtime_t worst;
 195     hrtime_t count;
 196     hrtime_t accum;
 197     int64_t summ;
 198 };
 199
 200 struct _xprof_stats_node
 201 {
 202     const char *name;
 203     xprof_stats_data accu;
 204     xprof_stats_data hist;
 205 };
 206
 207 typedef xprof_stats_node TimersArray[1];
 208
 209 /* public Data */
 210 SQUIDCEXTERN TimersArray *xprof_Timers;
 211
 212 /* Exported functions */
 213 SQUIDCEXTERN void xprof_start(xprof_type type, const char *timer);
 214 SQUIDCEXTERN void xprof_stop(xprof_type type, const char *timer);
 215 SQUIDCEXTERN void xprof_event(void *data);
 216
 217 #define PROF_start(type) xprof_start(XPROF_##type, #type)
 218 #define PROF_stop(type) xprof_stop(XPROF_##type, #type)
 219
 220 #else /* USE_XPROF_STATS */
 221
 222 #define PROF_start(ARGS) ((void)0)
 223 #define PROF_stop(ARGS) ((void)0)
 224
 225 #endif /* USE_XPROF_STATS */
 226
 227 #endif /* _PROFILING_H_ */