for now, add files

Makefile.frag

@@ -0,0 +1,10 @@
+dtrace-fixup:
+	if test -f $(builddir)/.libs/phpuv.o ; then \
+		dtrace -h -C -s $(srcdir)/phpuv.d $(builddir)/.libs/phpuv.o ; \
+	else \
+		dtrace -h -C -s  $(srcdir)/phpuv.d phpuv.lo ; \
+	fi
+
+$(srcdir)/libuv/uv.a:
+	$(MAKE) -C $(srcdir)/libuv
+	cp $(srcdir)/libuv/uv.a $(srcdir)/libuv/libuv.a

config.m4

@@ -5,7 +5,11 @@ PHP_ARG_ENABLE(httpparser, Whether to enable the "httpparser" module,
     [ --enable-httpparser     Enable "httpparser" module support])
 
 PHP_ARG_ENABLE(uv-debug, for uv debug support,
-    [ --enable-uv-debugEnable enable uv deubg support], no, no)
+    [ --enable-uv-debug       Enable enable uv deubg support], no, no)
+
+PHP_ARG_ENABLE(dtrace, Whether to enable the "dtrace" debug,
+    [ --enable-dtrace     Enable "dtrace" support])
+
 
 if test -z "$PHP_DEBUG"; then
     AC_ARG_ENABLE(debug,
@@ -20,6 +24,14 @@ if test "$PHP_UV_DEBUG" != "no"; then
     AC_DEFINE(PHP_UV_DEBUG, 1, [Enable uv debug support])
 fi
 
+if test "$PHP_UV_DTRACE" != "no"; then
+  UV_SHARED_DEPENDENCIES=dtrace-fixup
+  UV_SHARED_LIBADD="phpuv.o -Wl,-M$srcdir/kludge.map"
+
+  PHP_ADD_LIBRARY(dtrace, UV_SHARED_LIBADD)
+  PHP_SUBST(UV_SHARED_DEPENDENCIES)
+fi
+
 if test $PHP_UV != "no"; then
     SOURCES=""
 
@@ -51,4 +63,5 @@ if test $PHP_UV != "no"; then
 
     PHP_SUBST(UV_SHARED_LIBADD)
     PHP_SUBST([CFLAGS])
+    PHP_ADD_MAKEFILE_FRAGMENT
 fi

php_uv.c

@@ -24,6 +24,9 @@
 #define PHP_UV_DEBUG 0
 #endif
 
+#include <dtrace.h>
+#include <sys/sdt.h>
+
 #define PHP_UV_INIT_UV(uv, uv_type) \
 	uv = (php_uv_t *)emalloc(sizeof(php_uv_t)); \
 	if (!uv) { \
@@ -1708,6 +1711,7 @@ static void php_uv_udp_send(int type, INTERNAL_FUNCTION_PARAMETERS)
 
 PHP_MINIT_FUNCTION(uv)
 {
+	DTRACE_PROBE(phpuv, minit)
 	php_uv_init(TSRMLS_C);
 
 	uv_resource_handle   = zend_register_list_destructors_ex(destruct_uv, NULL, PHP_UV_RESOURCE_NAME, module_number);

phpuv.d

@@ -0,0 +1,3 @@
+provider phpuv {
+        probe minit();
+};