[PATCH 1/2] simplify inclusion of pthread.h

[Jonathan Nieder <jrnieder@gmail.com>]

In v1.7.1.1~56^2 (Thread-safe xmalloc and xrealloc needs a recursive
mutex, 2010-04-08), the thread-utils header started using
pthread_mutex_t, so callers, which generally had been using

	#ifndef NO_PTHREADS
	#include "thread-utils.h"
	#include <pthread.h>
	#endif

before, were changed to include <pthread.h> first.  It is simpler to
let thread-utils.h take care of the whole matter.  This way, we can
later add more things that the threaded part of the system would need
to thread-utils.h inside "ifndef NO_PTHREADS" and they will
automatically get included by all headers.

Signed-off-by: Jonathan Nieder <jrnieder@gmail.com>
---
 builtin/grep.c         |    4 ----
 builtin/pack-objects.c |    4 ----
 thread-utils.h         |    4 ++++
 transport-helper.c     |    4 ----
 4 files changed, 4 insertions(+), 12 deletions(-)

diff --git a/builtin/grep.c b/builtin/grep.c
index adb5424..fdf7131 100644
--- a/builtin/grep.c
+++ b/builtin/grep.c
@@ -17,11 +17,7 @@
 #include "grep.h"
 #include "quote.h"
 #include "dir.h"
-
-#ifndef NO_PTHREADS
-#include <pthread.h>
 #include "thread-utils.h"
-#endif
 
 static char const * const grep_usage[] = {
 	"git grep [options] [-e] <pattern> [<rev>...] [[--] <path>...]",
diff --git a/builtin/pack-objects.c b/builtin/pack-objects.c
index f027b3a..b0503b2 100644
--- a/builtin/pack-objects.c
+++ b/builtin/pack-objects.c
@@ -16,11 +16,7 @@
 #include "list-objects.h"
 #include "progress.h"
 #include "refs.h"
-
-#ifndef NO_PTHREADS
-#include <pthread.h>
 #include "thread-utils.h"
-#endif
 
 static const char pack_usage[] =
   "git pack-objects [ -q | --progress | --all-progress ]\n"
diff --git a/thread-utils.h b/thread-utils.h
index 1727a03..6fb98c3 100644
--- a/thread-utils.h
+++ b/thread-utils.h
@@ -1,7 +1,11 @@
 #ifndef THREAD_COMPAT_H
 #define THREAD_COMPAT_H
 
+#ifndef NO_PTHREADS
+#include <pthread.h>
+
 extern int online_cpus(void);
 extern int init_recursive_mutex(pthread_mutex_t*);
 
+#endif
 #endif /* THREAD_COMPAT_H */
diff --git a/transport-helper.c b/transport-helper.c
index 3a50856..4e4754c 100644
--- a/transport-helper.c
+++ b/transport-helper.c
@@ -8,11 +8,7 @@
 #include "quote.h"
 #include "remote.h"
 #include "string-list.h"
-
-#ifndef NO_PTHREADS
-#include <pthread.h>
 #include "thread-utils.h"
-#endif
 
 static int debug;
 
-- 
1.7.2.4