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authorSebastian Andrzej Siewior <sebastian@breakpoint.cc>2014-01-19 00:24:58 +0400
committerJason A. Donenfeld <Jason@zx2c4.com>2014-01-19 18:08:49 +0400
commitd3581b58890389794de5d5222c91a0129873e95c (patch)
tree95c4010b61869934cca86c5ac23056463754f2ee /cgit.mk
parentea7210bef377be4ffb088a1a8e5a9dd354f82afb (diff)
cache: use sendfile() instead of a pair of read() + write()
sendfile() does the same job and avoids to copy the content into userland and back. One has to define NO_SENDFILE in case the OS (kernel / libc) does not supported. It is disabled by default on non-linux environemnts. According to the glibc, sendfile64() was added in Linux 2.4 (so it has been there for a while) but after browsing over the mapage of FreeBSD's I noticed that the prototype is little different. Signed-off-by: Sebastian Andrzej Siewior <sebastian@breakpoint.cc>
Diffstat (limited to 'cgit.mk')
-rw-r--r--cgit.mk8
1 files changed, 8 insertions, 0 deletions
diff --git a/cgit.mk b/cgit.mk
index 056c3f9..3b8b79a 100644
--- a/cgit.mk
+++ b/cgit.mk
@@ -68,6 +68,14 @@ ifeq ($(findstring BSD,$(uname_S)),)
CGIT_LIBS += -ldl
endif
+# glibc 2.1+ offers sendfile which the most common C library on Linux
+ifeq ($(uname_S),Linux)
+ HAVE_LINUX_SENDFILE = YesPlease
+endif
+
+ifdef HAVE_LINUX_SENDFILE
+ CGIT_CFLAGS += -DHAVE_LINUX_SENDFILE
+endif
CGIT_OBJ_NAMES += cgit.o
CGIT_OBJ_NAMES += cache.o