Jonathan Nieder <jrnieder@xxxxxxxxx> writes:
> Since the transport-helper does not use recursive mutexes or ask the
> number of cores, it does not require any declarations from the
> thread-utils lib. Removing the unnecessary #include avoids false
> positives from "make CHECK_HEADER_DEPENDENCIES=1".
Sorry, I was slow and took me some time to realize what is going on.
Isn't it more like "Makefile does not say transport-helper.o depends on
thread-utils.h, but transport-helper.c does include it"? IOW, it not a
false positive; perhaps a real but an unnecessary positive.
> The #include directive in question was added in 7851b1e60
> (remote-fd/ext: finishing touches after code review, 2010-11-17),
> at the same times as the necessary #include for <pthread.h>.
I think the whole four-line block was cut & paste from other places that
use the threading, namely grep.c and pack-objects.c.
I wonder if it is better to do something like this instead. This way, we
can later add more things that threaded part of the system would need to
thread-utils.h inside "ifndef NO_PTHREADS" and they will automatically get
included by all the threaders.
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;
--
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