Make NO_PTHREADS the sole thread configuration variable

When the first piece of threaded code was introduced in commit 8ecce684, it
came with its own THREADED_DELTA_SEARCH Makefile option. Since this time,
more threaded code has come into the codebase and a NO_PTHREADS option has
also been added. Get rid of the original option as the newer, more generic
option covers everything we need.

Signed-off-by: Dan McGee <dpmcgee@gmail.com>
Signed-off-by: Junio C Hamano <gitster@pobox.com>

diff --git a/Documentation/RelNotes-1.7.0.txt b/Documentation/RelNotes-1.7.0.txt
index 997b026a735820359e5c44f5950a1a01ecddebe3..45ac9067f0fea82c69b8a38d174e462e2e89eb9c 100644 (file)
--- a/Documentation/RelNotes-1.7.0.txt
+++ b/Documentation/RelNotes-1.7.0.txt
@@ -175,6 +175,9 @@ Updates since v1.6.6
 
  * Many more commands are now built-in.
 
+ * THREADED_DELTA_SEARCH is no more.  If you build with threads, delta
+   compression will always take advantage of it.
+
 Fixes since v1.6.6
 ------------------
 

diff --git a/Makefile b/Makefile
index af08c8f452d24d4fdbed9c08dfb3a31e318d7672..83383c38f1e7106736f5a345b5c88d6d3c834bf1 100644 (file)
--- a/Makefile
+++ b/Makefile
@@ -180,9 +180,6 @@ all::
 # If not set it defaults to the bare 'wish'. If it is set to the empty
 # string then NO_TCLTK will be forced (this is used by configure script).
 #
-# Define THREADED_DELTA_SEARCH if you have pthreads and wish to exploit
-# parallel delta searching when packing objects.
-#
 # Define INTERNAL_QSORT to use Git's implementation of qsort(), which
 # is a simplified version of the merge sort used in glibc. This is
 # recommended if Git triggers O(n^2) behavior in your platform's qsort().
@@ -722,12 +719,10 @@ EXTLIBS =
 ifeq ($(uname_S),Linux)
        NO_STRLCPY = YesPlease
        NO_MKSTEMPS = YesPlease
-       THREADED_DELTA_SEARCH = YesPlease
 endif
 ifeq ($(uname_S),GNU/kFreeBSD)
        NO_STRLCPY = YesPlease
        NO_MKSTEMPS = YesPlease
-       THREADED_DELTA_SEARCH = YesPlease
 endif
 ifeq ($(uname_S),UnixWare)
        CC = cc
@@ -781,7 +776,6 @@ ifeq ($(uname_S),Darwin)
                NO_STRLCPY = YesPlease
        endif
        NO_MEMMEM = YesPlease
-       THREADED_DELTA_SEARCH = YesPlease
        USE_ST_TIMESPEC = YesPlease
 endif
 ifeq ($(uname_S),SunOS)
@@ -794,7 +788,6 @@ ifeq ($(uname_S),SunOS)
        NO_MKDTEMP = YesPlease
        NO_MKSTEMPS = YesPlease
        NO_REGEX = YesPlease
-       THREADED_DELTA_SEARCH = YesPlease
        ifeq ($(uname_R),5.7)
                NEEDS_RESOLV = YesPlease
                NO_IPV6 = YesPlease
@@ -850,7 +843,6 @@ ifeq ($(uname_S),FreeBSD)
        BASIC_LDFLAGS += -L/usr/local/lib
        DIR_HAS_BSD_GROUP_SEMANTICS = YesPlease
        USE_ST_TIMESPEC = YesPlease
-       THREADED_DELTA_SEARCH = YesPlease
        ifeq ($(shell expr "$(uname_R)" : '4\.'),2)
                PTHREAD_LIBS = -pthread
                NO_UINTMAX_T = YesPlease
@@ -864,7 +856,6 @@ ifeq ($(uname_S),OpenBSD)
        NEEDS_LIBICONV = YesPlease
        BASIC_CFLAGS += -I/usr/local/include
        BASIC_LDFLAGS += -L/usr/local/lib
-       THREADED_DELTA_SEARCH = YesPlease
 endif
 ifeq ($(uname_S),NetBSD)
        ifeq ($(shell expr "$(uname_R)" : '[01]\.'),2)
@@ -872,7 +863,6 @@ ifeq ($(uname_S),NetBSD)
        endif
        BASIC_CFLAGS += -I/usr/pkg/include
        BASIC_LDFLAGS += -L/usr/pkg/lib $(CC_LD_DYNPATH)/usr/pkg/lib
-       THREADED_DELTA_SEARCH = YesPlease
        USE_ST_TIMESPEC = YesPlease
        NO_MKSTEMPS = YesPlease
 endif
@@ -887,9 +877,7 @@ ifeq ($(uname_S),AIX)
        INTERNAL_QSORT = UnfortunatelyYes
        NEEDS_LIBICONV=YesPlease
        BASIC_CFLAGS += -D_LARGE_FILES
-       ifneq ($(shell expr "$(uname_V)" : '[1234]'),1)
-               THREADED_DELTA_SEARCH = YesPlease
-       else
+       ifeq ($(shell expr "$(uname_V)" : '[1234]'),1)
                NO_PTHREADS = YesPlease
        endif
 endif
@@ -915,7 +903,6 @@ ifeq ($(uname_S),IRIX)
        SNPRINTF_RETURNS_BOGUS = YesPlease
        SHELL_PATH = /usr/gnu/bin/bash
        NEEDS_LIBGEN = YesPlease
-       THREADED_DELTA_SEARCH = YesPlease
 endif
 ifeq ($(uname_S),IRIX64)
        NO_SETENV=YesPlease
@@ -934,7 +921,6 @@ ifeq ($(uname_S),IRIX64)
        SNPRINTF_RETURNS_BOGUS = YesPlease
        SHELL_PATH=/usr/gnu/bin/bash
        NEEDS_LIBGEN = YesPlease
-       THREADED_DELTA_SEARCH = YesPlease
 endif
 ifeq ($(uname_S),HP-UX)
        NO_IPV6=YesPlease
@@ -984,7 +970,6 @@ ifeq ($(uname_S),Windows)
        NO_CURL = YesPlease
        NO_PYTHON = YesPlease
        BLK_SHA1 = YesPlease
-       THREADED_DELTA_SEARCH = YesPlease
 
        CC = compat/vcbuild/scripts/clink.pl
        AR = compat/vcbuild/scripts/lib.pl
@@ -1036,7 +1021,6 @@ ifneq (,$(findstring MINGW,$(uname_S)))
        NO_REGEX = YesPlease
        NO_PYTHON = YesPlease
        BLK_SHA1 = YesPlease
-       THREADED_DELTA_SEARCH = YesPlease
        COMPAT_CFLAGS += -D__USE_MINGW_ACCESS -DNOGDI -Icompat -Icompat/fnmatch -Icompat/win32
        COMPAT_CFLAGS += -DSTRIP_EXTENSION=\".exe\"
        COMPAT_OBJS += compat/mingw.o compat/fnmatch/fnmatch.o compat/winansi.o \
@@ -1334,16 +1318,12 @@ ifdef RUNTIME_PREFIX
 endif
 
 ifdef NO_PTHREADS
-       THREADED_DELTA_SEARCH =
        BASIC_CFLAGS += -DNO_PTHREADS
 else
        EXTLIBS += $(PTHREAD_LIBS)
-endif
-
-ifdef THREADED_DELTA_SEARCH
-       BASIC_CFLAGS += -DTHREADED_DELTA_SEARCH
        LIB_OBJS += thread-utils.o
 endif
+
 ifdef DIR_HAS_BSD_GROUP_SEMANTICS
        COMPAT_CFLAGS += -DDIR_HAS_BSD_GROUP_SEMANTICS
 endif

diff --git a/builtin-pack-objects.c b/builtin-pack-objects.c
index b0887d759dc02e1b57fbbfa9e8e3d16c9ac00d8b..4a41547a27fe0177efc13b81cd56e064d96d1ac3 100644 (file)
--- a/builtin-pack-objects.c
+++ b/builtin-pack-objects.c
@@ -17,7 +17,7 @@
 #include "progress.h"
 #include "refs.h"
 
-#ifdef THREADED_DELTA_SEARCH
+#ifndef NO_PTHREADS
 #include "thread-utils.h"
 #include <pthread.h>
 #endif
@@ -1255,7 +1255,7 @@ static int delta_cacheable(unsigned long src_size, unsigned long trg_size,
        return 0;
 }
 
-#ifdef THREADED_DELTA_SEARCH
+#ifndef NO_PTHREADS
 
 static pthread_mutex_t read_mutex;
 #define read_lock()            pthread_mutex_lock(&read_mutex)
@@ -1380,7 +1380,7 @@ static int try_delta(struct unpacked *trg, struct unpacked *src,
        /*
         * Handle memory allocation outside of the cache
         * accounting lock.  Compiler will optimize the strangeness
-        * away when THREADED_DELTA_SEARCH is not defined.
+        * away when NO_PTHREADS is defined.
         */
        free(trg_entry->delta_data);
        cache_lock();
@@ -1567,7 +1567,7 @@ static void find_deltas(struct object_entry **list, unsigned *list_size,
        free(array);
 }
 
-#ifdef THREADED_DELTA_SEARCH
+#ifndef NO_PTHREADS
 
 /*
  * The main thread waits on the condition that (at least) one of the workers
@@ -1899,7 +1899,7 @@ static int git_pack_config(const char *k, const char *v, void *cb)
                if (delta_search_threads < 0)
                        die("invalid number of threads specified (%d)",
                            delta_search_threads);
-#ifndef THREADED_DELTA_SEARCH
+#ifdef NO_PTHREADS
                if (delta_search_threads != 1)
                        warning("no threads support, ignoring %s", k);
 #endif
@@ -2227,7 +2227,7 @@ int cmd_pack_objects(int argc, const char **argv, const char *prefix)
                        delta_search_threads = strtoul(arg+10, &end, 0);
                        if (!arg[10] || *end || delta_search_threads < 0)
                                usage(pack_usage);
-#ifndef THREADED_DELTA_SEARCH
+#ifdef NO_PTHREADS
                        if (delta_search_threads != 1)
                                warning("no threads support, "
                                        "ignoring %s", arg);

diff --git a/config.mak.in b/config.mak.in
index 67b12f73a1bb795207082973701ece8009167f1c..6008ac9f1b8d056e522d5fe83c8d56bff314ca92 100644 (file)
--- a/config.mak.in
+++ b/config.mak.in
@@ -56,5 +56,4 @@ NO_DEFLATE_BOUND=@NO_DEFLATE_BOUND@
 FREAD_READS_DIRECTORIES=@FREAD_READS_DIRECTORIES@
 SNPRINTF_RETURNS_BOGUS=@SNPRINTF_RETURNS_BOGUS@
 NO_PTHREADS=@NO_PTHREADS@
-THREADED_DELTA_SEARCH=@THREADED_DELTA_SEARCH@
 PTHREAD_LIBS=@PTHREAD_LIBS@

diff --git a/configure.ac b/configure.ac
index 78345ebb60240e6642f319467defe3e07d4aa263..229140e6be0660f946c9e8601235cf0a4724262e 100644 (file)
--- a/configure.ac
+++ b/configure.ac
@@ -762,10 +762,9 @@ AC_SUBST(NO_MKSTEMPS)
 # Define NO_SYMLINK_HEAD if you never want .git/HEAD to be a symbolic link.
 # Enable it on Windows.  By default, symrefs are still used.
 #
-# Define NO_PTHREADS if we do not have pthreads
+# Define NO_PTHREADS if we do not have pthreads.
 #
-# Define PTHREAD_LIBS to the linker flag used for Pthread support and define
-# THREADED_DELTA_SEARCH if Pthreads are available.
+# Define PTHREAD_LIBS to the linker flag used for Pthread support.
 AC_DEFUN([PTHREADTEST_SRC], [
 #include <pthread.h>
 
@@ -782,7 +781,6 @@ dnl   [[pthread_mutex_t test_mutex;]]
 dnl )])
 
 NO_PTHREADS=UnfortunatelyYes
-THREADED_DELTA_SEARCH=
 PTHREAD_LIBS=
 
 if test -n "$USER_NOPTHREAD"; then
@@ -798,7 +796,6 @@ elif test -z "$PTHREAD_CFLAGS"; then
        [AC_MSG_RESULT([yes])
                NO_PTHREADS=
                PTHREAD_LIBS="$opt"
-               THREADED_DELTA_SEARCH=YesPlease
                break
        ],
        [AC_MSG_RESULT([no])])
@@ -812,7 +809,6 @@ else
        [AC_MSG_RESULT([yes])
                NO_PTHREADS=
                PTHREAD_LIBS="$PTHREAD_CFLAGS"
-               THREADED_DELTA_SEARCH=YesPlease
        ],
        [AC_MSG_RESULT([no])])
 
@@ -823,7 +819,6 @@ CFLAGS="$old_CFLAGS"
 
 AC_SUBST(PTHREAD_LIBS)
 AC_SUBST(NO_PTHREADS)
-AC_SUBST(THREADED_DELTA_SEARCH)
 
 ## Output files
 AC_CONFIG_FILES(["${config_file}":"${config_in}":"${config_append}"])