Merge branch 'master' of https://github.com/mono/mono into issue4328

[mono.git] / mono / profiler / utils.c

diff --git a/mono/profiler/utils.c b/mono/profiler/utils.c
index 49d935dde43abbeafd95a437a89a77ae27da099a..8bf57a72f7c10e0e68e48ef63215d79e455a1a1c 100644 (file)
--- a/mono/profiler/utils.c
+++ b/mono/profiler/utils.c
@@ -1,8 +1,24 @@
+/*
+ * utils.c: log profiler and reporter utils
+ *
+ * We have here the minimal needed portability functions: we can't depend
+ * on the ones provided by the runtime, since they are internal and,
+ * especially mprof-report is an external program.
+ * Note also that we don't take a glib/eglib dependency here for mostly
+ * the same reason (but also because we need tight control in the profiler
+ * over memory allocation, which needs to work with the world stopped).
+ *
+ * Author:
+ *   Paolo Molaro (lupus@ximian.com)
+ *
+ * Copyright 2010 Novell, Inc (http://www.novell.com)
+ */
+#include "utils.h"
 #include <stdlib.h>
-#include <inttypes.h>
 #include <time.h>
 #include <stdio.h>
 #include <string.h>
+#include <unistd.h>
 #ifdef HOST_WIN32
 #include <windows.h>
 #else
@@ -10,14 +26,13 @@
 #include <sched.h>
 #endif
 
-#include "utils.h"
 
-//#ifdef HAVE_SYS_TIME_H
+#ifdef HAVE_SYS_TIME_H
 #include <sys/time.h>
-//#endif
-//#if HAVE_SYS_MMAN_H
+#endif
+#if HAVE_SYS_MMAN_H
 #include <sys/mman.h>
-//#endif
+#endif
 
 #if defined(__APPLE__)
 #include <mach/mach_time.h>  
@@ -26,13 +41,13 @@
 static mach_timebase_info_data_t timebase_info;
 #endif
 
-#ifndef MAP_ANON
+#ifndef MAP_ANONYMOUS
 #define MAP_ANONYMOUS MAP_ANON
 #endif
 
 #define TICKS_PER_SEC 1000000000LL
 
-#if (defined(TARGET_X86) || defined(TARGET_AMD64)) && defined(__linux__)
+#if (defined(TARGET_X86) || defined(TARGET_AMD64)) && defined(__linux__) && defined(HAVE_SCHED_GETCPU)
 #define HAVE_RDTSC 1
 #endif
 
@@ -59,10 +74,12 @@ static pthread_key_t tls_data;
 
 #ifdef HOST_WIN32
 static CRITICAL_SECTION log_lock;
+static LARGE_INTEGER pcounter_freq;
 #else
 static pthread_mutex_t log_lock = PTHREAD_MUTEX_INITIALIZER;
 #endif
 
+static int timer_overhead = 0;
 static uint64_t time_inc = 0;
 typedef uint64_t (*TimeFunc)(void);
 
@@ -74,14 +91,22 @@ clock_time (void)
 #if defined(__APPLE__)
        uint64_t time = mach_absolute_time ();
        
-       time *= info.numer;
-       time /= info.denom;
+       time *= timebase_info.numer;
+       time /= timebase_info.denom;
 
        return time;
-#else
+#elif defined(HOST_WIN32)
+       LARGE_INTEGER value;
+       QueryPerformanceCounter (&value);
+       return value.QuadPart * TICKS_PER_SEC / pcounter_freq.QuadPart;
+#elif defined(CLOCK_MONOTONIC)
        struct timespec tspec;
        clock_gettime (CLOCK_MONOTONIC, &tspec);
        return ((uint64_t)tspec.tv_sec * TICKS_PER_SEC + tspec.tv_nsec);
+#else
+       struct timeval tv;
+       gettimeofday (&tv, NULL);
+       return ((uint64_t)tv.tv_sec * TICKS_PER_SEC + tv.tv_usec * 1000);
 #endif
 }
 
@@ -194,9 +219,12 @@ null_time (void)
 void
 utils_init (int fast_time)
 {
+       int i;
+       uint64_t time_start, time_end;
        TLS_INIT (tls_data);
 #ifdef HOST_WIN32
        InitializeCriticalSection (&log_lock);
+       QueryPerformanceFrequency (&pcounter_freq);
 #endif
 #if defined (__APPLE__)
        mach_timebase_info (&timebase_info);
@@ -219,6 +247,17 @@ utils_init (int fast_time)
        } else {
                time_func = clock_time;
        }
+       time_start = time_func ();
+       for (i = 0; i < 256; ++i)
+               time_func ();
+       time_end = time_func ();
+       timer_overhead = (time_end - time_start) / 256;
+}
+
+int
+get_timer_overhead (void)
+{
+       return timer_overhead;
 }
 
 uint64_t
@@ -374,3 +413,13 @@ thread_id (void)
 #endif
 }
 
+uintptr_t
+process_id (void)
+{
+#ifdef HOST_WIN32
+       return 0; /* FIXME */
+#else
+       return (uintptr_t)getpid ();
+#endif
+}
+