From 0e138b6a3d3fb41c5915ddf1b327fc6f28e074a6 Mon Sep 17 00:00:00 2001
From: "C. McEnroe" <june@causal.agency>
Date: Thu, 22 Oct 2020 03:03:56 -0400
Subject: Import LibreSSL 3.2.2

---
 include/Makefile.am      |  3 +++
 include/compat/pthread.h | 31 +++++++++++++++++++++++++++----
 2 files changed, 30 insertions(+), 4 deletions(-)
 mode change 100644 => 100755 include/compat/pthread.h

(limited to 'include')

diff --git a/include/Makefile.am b/include/Makefile.am
index 6d808cc..4184cf8 100644
--- a/include/Makefile.am
+++ b/include/Makefile.am
@@ -32,12 +32,15 @@ noinst_HEADERS += compat/netinet/in.h
 noinst_HEADERS += compat/netinet/ip.h
 noinst_HEADERS += compat/netinet/tcp.h
 
+noinst_HEADERS += compat/sys/_null.h
 noinst_HEADERS += compat/sys/ioctl.h
 noinst_HEADERS += compat/sys/mman.h
 noinst_HEADERS += compat/sys/param.h
+noinst_HEADERS += compat/sys/queue.h
 noinst_HEADERS += compat/sys/select.h
 noinst_HEADERS += compat/sys/socket.h
 noinst_HEADERS += compat/sys/stat.h
+noinst_HEADERS += compat/sys/tree.h
 noinst_HEADERS += compat/sys/time.h
 noinst_HEADERS += compat/sys/types.h
 noinst_HEADERS += compat/sys/uio.h
diff --git a/include/compat/pthread.h b/include/compat/pthread.h
old mode 100644
new mode 100755
index 8b8c3c6..1527d3c
--- a/include/compat/pthread.h
+++ b/include/compat/pthread.h
@@ -8,6 +8,8 @@
 
 #ifdef _WIN32
 
+#include <malloc.h>
+#include <stdlib.h>
 #include <windows.h>
 
 /*
@@ -15,6 +17,11 @@
  */
 #define PTHREAD_ONCE_INIT   { INIT_ONCE_STATIC_INIT }
 
+/*
+ * Static mutex initialization values.
+ */
+#define PTHREAD_MUTEX_INITIALIZER	{ .lock = NULL }
+
 /*
  * Once definitions.
  */
@@ -55,27 +62,43 @@ pthread_equal(pthread_t t1, pthread_t t2)
 	return t1 == t2;
 }
 
-typedef CRITICAL_SECTION pthread_mutex_t;
+struct pthread_mutex {
+	volatile LPCRITICAL_SECTION lock;
+};
+typedef struct pthread_mutex pthread_mutex_t;
 typedef void pthread_mutexattr_t;
 
 static inline int
 pthread_mutex_init(pthread_mutex_t *mutex, const pthread_mutexattr_t *attr)
 {
-	InitializeCriticalSection(mutex);
+	if ((mutex->lock = malloc(sizeof(CRITICAL_SECTION))) == NULL)
+		exit(ENOMEM);
+	InitializeCriticalSection(mutex->lock);
 	return 0;
 }
 
 static inline int
 pthread_mutex_lock(pthread_mutex_t *mutex)
 {
-	EnterCriticalSection(mutex);
+	if (mutex->lock == NULL) {
+		LPCRITICAL_SECTION lcs;
+
+		if ((lcs = malloc(sizeof(CRITICAL_SECTION))) == NULL)
+			exit(ENOMEM);
+		InitializeCriticalSection(lcs);
+		if (InterlockedCompareExchangePointer((PVOID*)&mutex->lock, (PVOID)lcs, NULL) != NULL) {
+			DeleteCriticalSection(lcs);
+			free(lcs);
+		}
+	}
+	EnterCriticalSection(mutex->lock);
 	return 0;
 }
 
 static inline int
 pthread_mutex_unlock(pthread_mutex_t *mutex)
 {
-	LeaveCriticalSection(mutex);
+	LeaveCriticalSection(mutex->lock);
 	return 0;
 }
 
-- 
cgit 1.4.1