From 6c1325a2b17548a4249d26a846bc32b95b7d747d Mon Sep 17 00:00:00 2001
From: Garrett D'Amore <garrett@damore.org>
Date: Thu, 22 Dec 2016 02:19:18 -0800
Subject: Start of work to inline mutexes and condition variables.

---
 src/platform/posix/posix_impl.h   |  9 ++++++---
 src/platform/posix/posix_synch.c  | 21 +++++++++++----------
 src/platform/posix/posix_thread.c | 38 +++++++++++++++++++++++++++++++++++---
 3 files changed, 52 insertions(+), 16 deletions(-)

(limited to 'src/platform')

diff --git a/src/platform/posix/posix_impl.h b/src/platform/posix/posix_impl.h
index 0a3151f3..a7b15edc 100644
--- a/src/platform/posix/posix_impl.h
+++ b/src/platform/posix/posix_impl.h
@@ -22,14 +22,17 @@
 
 // Define types that this platform uses.
 #ifdef PLATFORM_POSIX_SYNCH
+
+#include <pthread.h>
+
 struct nni_mutex {
 	pthread_mutex_t mx;
-}
+};
 
-struct nni_condvar {
+struct nni_cond {
 	pthread_cond_t		cv;
 	pthread_mutex_t *	mx;
-}
+};
 #endif
 
 #endif // PLATFORM_POSIX_IMPL_H
\ No newline at end of file
diff --git a/src/platform/posix/posix_synch.c b/src/platform/posix/posix_synch.c
index 13147573..a3129f62 100644
--- a/src/platform/posix/posix_synch.c
+++ b/src/platform/posix/posix_synch.c
@@ -25,12 +25,15 @@
 
 #include <pthread.h>
 #include <time.h>
+#include <string.h>
+
+extern pthread_condattr_t nni_condattr;
+extern pthread_mutexattr_t nni_mutexattr;
 
 int
 nni_mutex_init(nni_mutex *mp)
 {
-	// pthrad_mutex_attr_t attr;
-	if (pthread_mutex_init(&mp->mx, NULL) != NULL) {
+	if (pthread_mutex_init(&mp->mx, &nni_mutexattr) != 0) {
 		return (NNG_ENOMEM);
 	}
 	return (0);
@@ -42,7 +45,7 @@ nni_mutex_fini(nni_mutex *mp)
 {
 	int rv;
 
-	if ((rv = pthread_mutex_destroy(&mp-- > mx)) != 0) {
+	if ((rv = pthread_mutex_destroy(&mp->mx)) != 0) {
 		nni_panic("pthread_mutex_destroy failed: %s", strerror(rv));
 	}
 }
@@ -136,12 +139,10 @@ nni_cond_attr(pthread_condattr_t **attrpp)
 	static int init = 0;
 	int rv;
 
-	/*
-	 * For efficiency's sake, we try to reuse the same attr for the
-	 * life of the library.  This avoids many reallocations.  Technically
-	 * this means that we will leak the attr on exit(), but this is
-	 * preferable to constantly allocating and reallocating it.
-	 */
+	 // For efficiency's sake, we try to reuse the same attr for the
+	 // life of the library.  This avoids many reallocations.  Technically
+	 // this means that we will leak the attr on exit(), but this is
+	 // preferable to constantly allocating and reallocating it.
 	if (init) {
 		*attrpp = &attr;
 		return (0);
@@ -178,7 +179,7 @@ nni_cond_create(nni_cond_t *cvp, nni_mutex_t mx)
 	pthread_condattr_t *attrp;
 	int rv;
 
-	if ((rv = cond_attr(&attrp)) != 0) {
+	if ((rv = nni_cond_attr(&attrp)) != 0) {
 		return (rv);
 	}
 	if ((c = nni_alloc(sizeof (*c))) == NULL) {
diff --git a/src/platform/posix/posix_thread.c b/src/platform/posix/posix_thread.c
index 8928974c..1bbe6e28 100644
--- a/src/platform/posix/posix_thread.c
+++ b/src/platform/posix/posix_thread.c
@@ -71,12 +71,15 @@ nni_thread_reap(nni_thread_t thr)
 
 
 void
-atfork_child(void)
+nni_atfork_child(void)
 {
 	plat_fork = 1;
 }
 
 
+pthread_condattr_t nni_condattr;
+pthread_mutexattr_t nni_mutexattr;
+
 int
 nni_plat_init(int (*helper)(void))
 {
@@ -93,7 +96,30 @@ nni_plat_init(int (*helper)(void))
 		pthread_mutex_unlock(&plat_lock);
 		return (0);
 	}
-	if (pthread_atfork(NULL, NULL, atfork_child) != 0) {
+	if (pthread_condattr_init(&nni_condattr) != 0) {
+		pthread_mutex_unlock(&plat_lock);
+		return (NNG_ENOMEM);
+	}
+#if !defined(NNG_USE_GETTIMEOFDAY) && NNG_USE_CLOCKID != CLOCK_REALTIME
+	if (pthread_condattr_setclock(&nni_condattr, NNG_USE_CLOCKID) != 0) {
+		pthread_mutex_unlock(&plat_lock);
+		return (NNG_ENOMEM);
+	}
+#endif
+
+	if (pthread_mutexattr_init(&nni_mutexattr) != 0) {
+		pthread_mutex_unlock(&plat_lock);
+		return (NNG_ENOMEM);
+	}
+
+	if (pthread_mutexattr_settype(&nni_mutexattr,
+	    PTHREAD_MUTEX_ERRORCHECK) != 0) {
+		pthread_mutex_unlock(&plat_lock);
+		return (NNG_ENOMEM);
+	}
+
+
+	if (pthread_atfork(NULL, NULL, nni_atfork_child) != 0) {
 		pthread_mutex_unlock(&plat_lock);
 		return (NNG_ENOMEM);
 	}
@@ -109,7 +135,13 @@ nni_plat_init(int (*helper)(void))
 void
 nni_plat_fini(void)
 {
-	// XXX: NOTHING *YET*
+	pthread_mutex_lock(&plat_lock);
+	if (plat_init) {
+		pthread_mutexattr_destroy(&nni_mutexattr);
+		pthread_condattr_destroy(&nni_condattr);
+		plat_init = 0;
+	}
+	pthread_mutex_unlock(&plat_lock);
 }
 
 
-- 
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