X-Git-Url: http://wien.tomnetworks.com/gitweb/?a=blobdiff_plain;f=mono%2Fprofiler%2Futils.c;h=8bf57a72f7c10e0e68e48ef63215d79e455a1a1c;hb=6f76efaedfbbd4be65d20073b7389c59111cf7d8;hp=b6e83963e58108831d97cd1db9794c88b7e984fa;hpb=5fc8a5719a1bc1af414a931ff5c48a5d4d9389f3;p=mono.git

diff --git a/mono/profiler/utils.c b/mono/profiler/utils.c
index b6e83963e58..8bf57a72f7c 100644
--- a/mono/profiler/utils.c
+++ b/mono/profiler/utils.c
@@ -18,6 +18,7 @@
 #include <time.h>
 #include <stdio.h>
 #include <string.h>
+#include <unistd.h>
 #ifdef HOST_WIN32
 #include <windows.h>
 #else
@@ -40,13 +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
 
@@ -73,10 +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);
 
@@ -88,14 +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
 }
 
@@ -208,9 +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);
@@ -233,6 +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
@@ -388,3 +413,13 @@ thread_id (void)
 #endif
 }
 
+uintptr_t
+process_id (void)
+{
+#ifdef HOST_WIN32
+	return 0; /* FIXME */
+#else
+	return (uintptr_t)getpid ();
+#endif
+}
+