[PATCH] boehm-gc configuration support for GNU/Hurd
Thomas Schwinge
thomas@codesourcery.com
Sat Jun 16 15:02:00 GMT 2012
Hello!
This is a backport of upstream boehm-gc configuration support for
GNU/Hurd. The equivalent thing has been used in Debian's GCC packages
since GCC 4.2 already, and I decided that *NOW* ought to be the time to
put it into the GCC tree.
That patch has mostly be done by Samuel Thibault <samuel.thibault@gnu.org>.
boehm-gc/
* configure.ac: Add stanza for *-*-gnu* threads configuration.
* configure: Regenerate.
* include/gc_config.h.in: Likewise.
* dyn_load.c (_GNU_SOURCE): Define for __GNU__.
* include/gc_config_macros.h (_REENTRANT, GC_PTHREADS): Define for
GC_GNU_THREADS.
* include/private/gcconfig.h (DATASTART): Don't define for I386 &&
HURD.
(SIG_SUSPEND, SIG_THR_RESTART, SEARCH_FOR_DATA_START): Define for I386
&& HURD.
(UNIX_LIKE, REGISTER_LIBRARIES_EARLY): Define for HURD.
* os_dep.c (GC_init_linux_data_start): Handle for HURD.
* pthread_support.c (GC_thr_init): Add case for GC_GNU_THREADS.
* specific.c: Use for GC_GNU_THREADS.
* threadlibs.c: Add case for GC_GNU_THREADS.
OK to commit?
Grüße,
Thomas
---
boehm-gc/configure | 9 +++++++++
boehm-gc/configure.ac | 5 +++++
boehm-gc/dyn_load.c | 3 ++-
boehm-gc/include/gc_config.h.in | 3 +++
boehm-gc/include/gc_config_macros.h | 4 +++-
boehm-gc/include/private/gcconfig.h | 13 +++++++++----
boehm-gc/os_dep.c | 4 ++--
boehm-gc/pthread_support.c | 2 +-
boehm-gc/specific.c | 2 +-
boehm-gc/threadlibs.c | 3 ++-
10 files changed, 37 insertions(+), 11 deletions(-)
diff --git a/boehm-gc/configure b/boehm-gc/configure
index aa61053..0eeab69 100755
--- a/boehm-gc/configure
+++ b/boehm-gc/configure
@@ -14794,6 +14794,15 @@ $as_echo "$as_me: WARNING: \"Only HP-UX 11 POSIX threads are supported.\"" >&2;}
$as_echo "#define USE_COMPILER_TLS 1" >>confdefs.h
;;
+ *-*-gnu*)
+
+$as_echo "#define GC_GNU_THREADS 1" >>confdefs.h
+
+ $as_echo "#define _REENTRANT 1" >>confdefs.h
+
+ $as_echo "#define THREAD_LOCAL_ALLOC 1" >>confdefs.h
+
+ ;;
*-*-freebsd*)
{ $as_echo "$as_me:${as_lineno-$LINENO}: WARNING: \"FreeBSD does not yet fully support threads with Boehm GC.\"" >&5
$as_echo "$as_me: WARNING: \"FreeBSD does not yet fully support threads with Boehm GC.\"" >&2;}
diff --git a/boehm-gc/configure.ac b/boehm-gc/configure.ac
index 2eddc9f..1ccfe37 100644
--- a/boehm-gc/configure.ac
+++ b/boehm-gc/configure.ac
@@ -175,6 +175,11 @@ case "$THREADS" in
AC_DEFINE(THREAD_LOCAL_ALLOC)
AC_DEFINE(USE_COMPILER_TLS, 1,[use tls for boehm])
;;
+ *-*-gnu*)
+ AC_DEFINE(GC_GNU_THREADS,1,[support GNU threads])
+ AC_DEFINE(_REENTRANT)
+ AC_DEFINE(THREAD_LOCAL_ALLOC)
+ ;;
*-*-freebsd*)
AC_MSG_WARN("FreeBSD does not yet fully support threads with Boehm GC.")
AC_DEFINE(GC_FREEBSD_THREADS,1,[support FreeBSD threads])
diff --git a/boehm-gc/dyn_load.c b/boehm-gc/dyn_load.c
index f1e3e8e..eac2e71 100644
--- a/boehm-gc/dyn_load.c
+++ b/boehm-gc/dyn_load.c
@@ -26,7 +26,8 @@
* None of this is safe with dlclose and incremental collection.
* But then not much of anything is safe in the presence of dlclose.
*/
-#if (defined(__linux__) || defined(__GLIBC__)) && !defined(_GNU_SOURCE)
+#if (defined(__linux__) || defined(__GLIBC__) || defined(__GNU__)) \
+ && !defined(_GNU_SOURCE)
/* Can't test LINUX, since this must be define before other includes */
# define _GNU_SOURCE
#endif
diff --git a/boehm-gc/include/gc_config.h.in b/boehm-gc/include/gc_config.h.in
index 6bdd807..d1ae47d 100644
--- a/boehm-gc/include/gc_config.h.in
+++ b/boehm-gc/include/gc_config.h.in
@@ -33,6 +33,9 @@
/* include support for gcj */
#undef GC_GCJ_SUPPORT
+/* support GNU threads */
+#undef GC_GNU_THREADS
+
/* enables support for HP/UX 11 pthreads */
#undef GC_HPUX_THREADS
diff --git a/boehm-gc/include/gc_config_macros.h b/boehm-gc/include/gc_config_macros.h
index 12e91e2..fd3006c 100644
--- a/boehm-gc/include/gc_config_macros.h
+++ b/boehm-gc/include/gc_config_macros.h
@@ -6,7 +6,8 @@
|| defined(GC_SOLARIS_PTHREADS) \
|| defined(GC_HPUX_THREADS) \
|| defined(GC_AIX_THREADS) \
- || defined(GC_LINUX_THREADS))
+ || defined(GC_LINUX_THREADS) \
+ || defined(GC_GNU_THREADS))
# define _REENTRANT
/* Better late than never. This fails if system headers that */
/* depend on this were previously included. */
@@ -18,6 +19,7 @@
# if defined(GC_SOLARIS_PTHREADS) || defined(GC_FREEBSD_THREADS) || \
defined(GC_IRIX_THREADS) || defined(GC_LINUX_THREADS) || \
+ defined(GC_GNU_THREADS) || \
defined(GC_HPUX_THREADS) || defined(GC_OSF1_THREADS) || \
defined(GC_DGUX386_THREADS) || defined(GC_DARWIN_THREADS) || \
defined(GC_AIX_THREADS) || \
diff --git a/boehm-gc/include/private/gcconfig.h b/boehm-gc/include/private/gcconfig.h
index 0263c13..594ce43 100644
--- a/boehm-gc/include/private/gcconfig.h
+++ b/boehm-gc/include/private/gcconfig.h
@@ -1316,8 +1316,9 @@
# define OS_TYPE "HURD"
# define STACK_GROWS_DOWN
# define HEURISTIC2
- extern int __data_start[];
-# define DATASTART ( (ptr_t) (__data_start))
+# define SIG_SUSPEND SIGUSR1
+# define SIG_THR_RESTART SIGUSR2
+# define SEARCH_FOR_DATA_START
extern int _end[];
# define DATAEND ( (ptr_t) (_end))
/* # define MPROTECT_VDB Not quite working yet? */
@@ -2169,7 +2170,8 @@
# if defined(SVR4) || defined(LINUX) || defined(IRIX5) || defined(HPUX) \
|| defined(OPENBSD) || defined(NETBSD) || defined(FREEBSD) \
|| defined(DGUX) || defined(BSD) || defined(SUNOS4) \
- || defined(_AIX) || defined(DARWIN) || defined(OSF1)
+ || defined(_AIX) || defined(DARWIN) || defined(OSF1) \
+ || defined(HURD)
# define UNIX_LIKE /* Basic Unix-like system calls work. */
# endif
@@ -2225,7 +2227,7 @@
# define CACHE_LINE_SIZE 32 /* Wild guess */
# endif
-# if defined(LINUX) || defined(__GLIBC__)
+# if defined(LINUX) || defined(HURD) || defined(__GLIBC__)
# define REGISTER_LIBRARIES_EARLY
/* We sometimes use dl_iterate_phdr, which may acquire an internal */
/* lock. This isn't safe after the world has stopped. So we must */
@@ -2260,6 +2262,9 @@
# if defined(GC_AIX_THREADS) && !defined(_AIX)
--> inconsistent configuration
# endif
+# if defined(GC_GNU_THREADS) && !defined(HURD)
+ --> inconsistent configuration
+# endif
# if defined(GC_WIN32_THREADS) && !defined(MSWIN32) && !defined(CYGWIN32)
--> inconsistent configuration
# endif
diff --git a/boehm-gc/os_dep.c b/boehm-gc/os_dep.c
index ca8be1a..a2dd304 100644
--- a/boehm-gc/os_dep.c
+++ b/boehm-gc/os_dep.c
@@ -312,7 +312,7 @@ char *GC_parse_map_entry(char *buf_ptr, word *start, word *end,
/* for recent Linux versions. This seems to be the easiest way to */
/* cover all versions. */
-# ifdef LINUX
+# if defined(LINUX) || defined(HURD)
/* Some Linux distributions arrange to define __data_start. Some */
/* define data_start as a weak symbol. The latter is technically */
/* broken, since the user program may define data_start, in which */
@@ -331,7 +331,7 @@ char *GC_parse_map_entry(char *buf_ptr, word *start, word *end,
{
extern ptr_t GC_find_limit();
-# ifdef LINUX
+# if defined(LINUX) || defined(HURD)
/* Try the easy approaches first: */
if ((ptr_t)__data_start != 0) {
GC_data_start = (ptr_t)(__data_start);
diff --git a/boehm-gc/pthread_support.c b/boehm-gc/pthread_support.c
index b3abc69..6d8f020 100644
--- a/boehm-gc/pthread_support.c
+++ b/boehm-gc/pthread_support.c
@@ -884,7 +884,7 @@ void GC_thr_init()
GC_nprocs = pthread_num_processors_np();
# endif
# if defined(GC_OSF1_THREADS) || defined(GC_AIX_THREADS) \
- || defined(GC_SOLARIS_PTHREADS)
+ || defined(GC_SOLARIS_PTHREADS) || defined(GC_GNU_THREADS)
GC_nprocs = sysconf(_SC_NPROCESSORS_ONLN);
if (GC_nprocs <= 0) GC_nprocs = 1;
# endif
diff --git a/boehm-gc/specific.c b/boehm-gc/specific.c
index 7d5d889..e78cf7a 100644
--- a/boehm-gc/specific.c
+++ b/boehm-gc/specific.c
@@ -13,7 +13,7 @@
#include "private/gc_priv.h" /* For GC_compare_and_exchange, GC_memory_barrier */
-#if defined(GC_LINUX_THREADS)
+#if defined(GC_LINUX_THREADS) || defined(GC_GNU_THREADS)
#include "private/specific.h"
diff --git a/boehm-gc/threadlibs.c b/boehm-gc/threadlibs.c
index 9078c8d..69fcc5e 100644
--- a/boehm-gc/threadlibs.c
+++ b/boehm-gc/threadlibs.c
@@ -12,7 +12,8 @@ int main()
# endif
# if defined(GC_LINUX_THREADS) || defined(GC_IRIX_THREADS) \
|| defined(GC_SOLARIS_PTHREADS) \
- || defined(GC_DARWIN_THREADS) || defined(GC_AIX_THREADS)
+ || defined(GC_DARWIN_THREADS) || defined(GC_AIX_THREADS) \
+ || defined(GC_GNU_THREADS)
printf("-lpthread\n");
# endif
# if defined(GC_FREEBSD_THREADS)
--
tg: (c5acd2b..) hurd/boehm-gc/config_backport (depends on: baseline)
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