Author: tobias@masterthesis-vm
Branch: c8-efficient-serial-execution
Changeset: r2023:f1f7a2e83f3c
Date: 2017-03-06 10:55 +0100
http://bitbucket.org/pypy/stmgc/changeset/f1f7a2e83f3c/
Log: Add macros for timing instrumentation
diff --git a/c8/stm/prof.c b/c8/stm/prof.c
--- a/c8/stm/prof.c
+++ b/c8/stm/prof.c
@@ -39,8 +39,11 @@
buf.extra,
EXTRA_LEN_MAX);
}
} else if (payload->type == STM_EVENT_PAYLOAD_DURATION) {
- uint32_t duration = payload->data.duration;
- buf.extra_length = sprintf(buf.extra, "%u", duration);
+ struct timespec *duration = payload->data.duration;
+ buf.extra_length = sprintf(buf.extra,
+ "s%un%u",
+ duration->tv_sec,
+ duration->tv_nsec);
}
}
diff --git a/c8/stm/timing.h b/c8/stm/timing.h
new file mode 100644
--- /dev/null
+++ b/c8/stm/timing.h
@@ -0,0 +1,16 @@
+#include <time.h>
+
+/* Use raw monotonic time, i.e., solely based on local hardware (no NTP
+ adjustments) as in prof.c to obtain values comparable with total program
+ runtime. */
+#define start_timer() struct timespec start; \
+ clock_gettime(CLOCK_MONOTONIC_RAW, &start);
+
+#define stop_timer() struct timespec stop; \
+ clock_gettime(CLOCK_MONOTONIC_RAW, &stop);
+
+/* Must use start_timer and stop_timer before using this macro. */
+#define get_duration() struct timespec duration = { \
+ stop.tv_sec - start.tv_sec, \
+ stop.tv_nsec - start.tv_nsec \
+ };
diff --git a/c8/stmgc.h b/c8/stmgc.h
--- a/c8/stmgc.h
+++ b/c8/stmgc.h
@@ -201,7 +201,7 @@
/* ==================== PUBLIC API ==================== */
/* Number of segments (i.e. how many transactions can be executed in
- parallel, in maximum). If you try to start transactions in more
+ parallel, at maximum). If you try to start transactions in more
threads than the number of segments, it will block, waiting for the
next segment to become free.
*/
@@ -616,9 +616,11 @@
_STM_EVENT_PAYLOAD_N
};
+
+#include <time.h>
typedef union {
stm_loc_marker_t *loc_marker;
- uint32_t duration;
+ struct timespec *duration;
} stm_timing_event_payload_data_t;
/* Wrapper for payload holding data type and data. */
typedef struct {
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