added monotonic clock plugin

core/uwsgi.c

@@ -2041,6 +2041,8 @@ int main(int argc, char *argv[], char *envp[]) {
                 uwsgi_log_initial("machine: %s\n", uuts.machine);
         }
 
+	uwsgi_log_initial("clock source: %s\n", uwsgi.clock->name);
+
 
 #ifdef __BIG_ENDIAN__
 	uwsgi_log_initial("*** big endian arch detected ***\n");

plugins/clock_monotonic/clock_monotonic.c

@@ -0,0 +1,32 @@
+#include "../../uwsgi.h"
+
+// timespecs have nanoseconds resolution
+
+time_t uwsgi_monotonic_seconds() {
+	struct timespec ts;
+	clock_gettime(CLOCK_MONOTONIC, &ts);
+	return ts.tv_sec;
+}
+
+uint64_t uwsgi_monotonic_microseconds() {
+        struct timespec ts;
+        clock_gettime(CLOCK_MONOTONIC, &ts);
+	return (ts.tv_sec * 1000000) + (ts.tv_nsec*1000);
+}
+
+
+static struct uwsgi_clock uwsgi_monotonic_clock = {
+	.name = "monotonic",
+	.seconds = uwsgi_monotonic_seconds,
+	.microseconds = uwsgi_monotonic_microseconds,
+};
+
+
+void uwsgi_monotonic_clock_load() {
+	uwsgi_register_clock(&uwsgi_monotonic_clock);
+}
+
+struct uwsgi_plugin clock_monotonic_plugin = {
+	.name = "clock_monotonic",
+	.on_load = uwsgi_monotonic_clock_load
+};

plugins/clock_monotonic/uwsgiplugin.py

@@ -0,0 +1,6 @@
+NAME='clock_monotonic'
+
+CFLAGS = []
+LDFLAGS = []
+LIBS = []
+GCC_LIST = ['clock_monotonic']