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-rw-r--r--erts/aclocal.m4219
1 files changed, 197 insertions, 22 deletions
diff --git a/erts/aclocal.m4 b/erts/aclocal.m4
index 61244c7cd3..3b1edd7605 100644
--- a/erts/aclocal.m4
+++ b/erts/aclocal.m4
@@ -521,11 +521,13 @@ if test "X$host_os" = "Xwin32"; then
THR_DEFS="-DWIN32_THREADS"
THR_LIBS=
THR_LIB_NAME=win32_threads
+ THR_LIB_TYPE=win32_threads
else
AC_MSG_RESULT(no)
THR_DEFS=
THR_LIBS=
THR_LIB_NAME=
+ THR_LIB_TYPE=posix_unknown
dnl Try to find POSIX threads
@@ -586,6 +588,7 @@ dnl On ofs1 the '-pthread' switch should be used
AC_MSG_WARN([result yes guessed because of cross compilation])
fi
if test $nptl = yes; then
+ THR_LIB_TYPE=posix_nptl
need_nptl_incldir=no
AC_CHECK_HEADER(nptl/pthread.h,
[need_nptl_incldir=yes
@@ -653,6 +656,19 @@ fi
])
+AC_DEFUN(ERL_INTERNAL_LIBS,
+[
+
+ERTS_INTERNAL_X_LIBS=
+
+AC_CHECK_LIB(kstat, kstat_open,
+[AC_DEFINE(HAVE_KSTAT, 1, [Define if you have kstat])
+ERTS_INTERNAL_X_LIBS="$ERTS_INTERNAL_X_LIBS -lkstat"])
+
+AC_SUBST(ERTS_INTERNAL_X_LIBS)
+
+])
+
dnl ----------------------------------------------------------------------
dnl
dnl ERL_FIND_ETHR_LIB
@@ -676,10 +692,14 @@ AC_DEFUN(ERL_FIND_ETHR_LIB,
[
LM_CHECK_THR_LIB
+ERL_INTERNAL_LIBS
+ethr_have_native_atomics=no
+ethr_have_native_spinlock=no
ETHR_THR_LIB_BASE="$THR_LIB_NAME"
+ETHR_THR_LIB_BASE_TYPE="$THR_LIB_TYPE"
ETHR_DEFS="$THR_DEFS"
-ETHR_X_LIBS="$THR_LIBS"
+ETHR_X_LIBS="$THR_LIBS $ERTS_INTERNAL_X_LIBS"
ETHR_LIBS=
ETHR_LIB_NAME=
@@ -691,6 +711,7 @@ ethr_lib_name=ethread
case "$THR_LIB_NAME" in
win32_threads)
+ ETHR_THR_LIB_BASE_DIR=win
# * _WIN32_WINNT >= 0x0400 is needed for
# TryEnterCriticalSection
# * _WIN32_WINNT >= 0x0403 is needed for
@@ -716,10 +737,13 @@ case "$THR_LIB_NAME" in
if test $found_win32_winnt = no; then
AC_MSG_ERROR([-D_WIN32_WINNT missing in CPPFLAGS])
fi
+ ethr_have_native_atomics=yes
+ ethr_have_native_spinlock=yes
AC_DEFINE(ETHR_WIN32_THREADS, 1, [Define if you have win32 threads])
;;
pthread)
+ ETHR_THR_LIB_BASE_DIR=pthread
AC_DEFINE(ETHR_PTHREADS, 1, [Define if you have pthreads])
case $host_os in
openbsd*)
@@ -775,9 +799,7 @@ case "$THR_LIB_NAME" in
if test $usable_sigaltstack = no; then
ETHR_DEFS="$ETHR_DEFS -DETHR_UNUSABLE_SIGALTSTACK"
fi
-
- AC_DEFINE(ETHR_INIT_MUTEX_IN_CHILD_AT_FORK, 1, \
-[Define if mutexes should be reinitialized (instead of unlocked) in child at fork.]) ;;
+ ;;
*) ;;
esac
@@ -808,6 +830,10 @@ case "$THR_LIB_NAME" in
[Define if you need the <nptl/pthread.h> header file.])
fi
+ AC_CHECK_HEADER(sched.h, \
+ AC_DEFINE(ETHR_HAVE_SCHED_H, 1, \
+[Define if you have the <sched.h> header file.]))
+
AC_CHECK_HEADER(sys/time.h, \
AC_DEFINE(ETHR_HAVE_SYS_TIME_H, 1, \
[Define if you have the <sys/time.h> header file.]))
@@ -823,26 +849,63 @@ case "$THR_LIB_NAME" in
dnl Check for functions
dnl
- AC_CHECK_FUNC(pthread_atfork, \
- AC_DEFINE(ETHR_HAVE_PTHREAD_ATFORK, 1, \
-[Define if you have the pthread_atfork function.]))
- AC_CHECK_FUNC(pthread_mutexattr_settype, \
- AC_DEFINE(ETHR_HAVE_PTHREAD_MUTEXATTR_SETTYPE, 1, \
-[Define if you have the pthread_mutexattr_settype function.]))
- AC_CHECK_FUNC(pthread_mutexattr_setkind_np, \
- AC_DEFINE(ETHR_HAVE_PTHREAD_MUTEXATTR_SETKIND_NP, 1, \
-[Define if you have the pthread_mutexattr_setkind_np function.]))
AC_CHECK_FUNC(pthread_spin_lock, \
- AC_DEFINE(ETHR_HAVE_PTHREAD_SPIN_LOCK, 1, \
-[Define if you have the pthread_spin_lock function.]))
+ [ethr_have_native_spinlock=yes \
+ AC_DEFINE(ETHR_HAVE_PTHREAD_SPIN_LOCK, 1, \
+[Define if you have the pthread_spin_lock function.])])
+
+ have_sched_yield=no
+ have_librt_sched_yield=no
+ AC_CHECK_FUNC(sched_yield, [have_sched_yield=yes])
+ if test $have_sched_yield = no; then
+ AC_CHECK_LIB(rt, sched_yield,
+ [have_librt_sched_yield=yes
+ ETHR_X_LIBS="$ETHR_X_LIBS -lrt"])
+ fi
+ if test $have_sched_yield = yes || test $have_librt_sched_yield = yes; then
+ AC_DEFINE(ETHR_HAVE_SCHED_YIELD, 1, [Define if you have the sched_yield() function.])
+ AC_MSG_CHECKING([whether sched_yield() returns an int])
+ sched_yield_ret_int=no
+ AC_TRY_COMPILE([
+ #ifdef ETHR_HAVE_SCHED_H
+ #include <sched.h>
+ #endif
+ ],
+ [int sched_yield();],
+ [sched_yield_ret_int=yes])
+ AC_MSG_RESULT([$sched_yield_ret_int])
+ if test $sched_yield_ret_int = yes; then
+ AC_DEFINE(ETHR_SCHED_YIELD_RET_INT, 1, [Define if sched_yield() returns an int.])
+ fi
+ fi
+
+ have_pthread_yield=no
+ AC_CHECK_FUNC(pthread_yield, [have_pthread_yield=yes])
+ if test $have_pthread_yield = yes; then
+ AC_DEFINE(ETHR_HAVE_PTHREAD_YIELD, 1, [Define if you have the pthread_yield() function.])
+ AC_MSG_CHECKING([whether pthread_yield() returns an int])
+ pthread_yield_ret_int=no
+ AC_TRY_COMPILE([
+ #if defined(ETHR_NEED_NPTL_PTHREAD_H)
+ #include <nptl/pthread.h>
+ #elif defined(ETHR_HAVE_MIT_PTHREAD_H)
+ #include <pthread/mit/pthread.h>
+ #elif defined(ETHR_HAVE_PTHREAD_H)
+ #include <pthread.h>
+ #endif
+ ],
+ [int pthread_yield();],
+ [pthread_yield_ret_int=yes])
+ AC_MSG_RESULT([$pthread_yield_ret_int])
+ if test $pthread_yield_ret_int = yes; then
+ AC_DEFINE(ETHR_PTHREAD_YIELD_RET_INT, 1, [Define if pthread_yield() returns an int.])
+ fi
+ fi
have_pthread_rwlock_init=no
AC_CHECK_FUNC(pthread_rwlock_init, [have_pthread_rwlock_init=yes])
if test $have_pthread_rwlock_init = yes; then
- AC_DEFINE(ETHR_HAVE_PTHREAD_RWLOCK_INIT, 1, \
-[Define if you have a pthread_rwlock implementation that can be used.])
-
ethr_have_pthread_rwlockattr_setkind_np=no
AC_CHECK_FUNC(pthread_rwlockattr_setkind_np,
[ethr_have_pthread_rwlockattr_setkind_np=yes])
@@ -876,12 +939,42 @@ case "$THR_LIB_NAME" in
fi
fi
+ if test "$force_pthread_rwlocks" = "yes"; then
+ AC_DEFINE(ETHR_FORCE_PTHREAD_RWLOCK, 1, \
+[Define if you want to force usage of pthread rwlocks])
+
+ if test $have_pthread_rwlock_init = yes; then
+ AC_MSG_WARN([Forced usage of pthread rwlocks. Note that this implementation may suffer from starvation issues.])
+ else
+ AC_MSG_ERROR([User forced usage of pthread rwlock, but no such implementation was found])
+ fi
+ fi
AC_CHECK_FUNC(pthread_attr_setguardsize, \
AC_DEFINE(ETHR_HAVE_PTHREAD_ATTR_SETGUARDSIZE, 1, \
[Define if you have the pthread_attr_setguardsize function.]))
+ linux_futex=no
+ AC_MSG_CHECKING([for Linux futexes])
+ AC_TRY_LINK([
+ #include <sys/syscall.h>
+ #include <unistd.h>
+ #include <linux/futex.h>
+ #include <sys/time.h>
+ ],
+ [
+ int i = 1;
+ syscall(__NR_futex, (void *) &i, FUTEX_WAKE, 1,
+ (void*)0,(void*)0, 0);
+ syscall(__NR_futex, (void *) &i, FUTEX_WAIT, 0,
+ (void*)0,(void*)0, 0);
+ return 0;
+ ],
+ linux_futex=yes)
+ AC_MSG_RESULT([$linux_futex])
+ test $linux_futex = yes && AC_DEFINE(ETHR_HAVE_LINUX_FUTEX, 1, [Define if you have a linux futex implementation.])
+
AC_MSG_CHECKING([for GCC atomic operations])
ethr_have_gcc_atomic_ops=no
AC_TRY_LINK([],
@@ -899,10 +992,69 @@ case "$THR_LIB_NAME" in
AC_MSG_RESULT([$ethr_have_gcc_atomic_ops])
test $ethr_have_gcc_atomic_ops = yes && AC_DEFINE(ETHR_HAVE_GCC_ATOMIC_OPS, 1, [Define if you have gcc atomic operations])
+ case "$host_cpu" in
+ sun4u | sparc64 | sun4v)
+ ethr_have_native_atomics=yes;;
+ i86pc | i386 | i486 | i586 | i686 | x86_64 | amd64)
+ ethr_have_native_atomics=yes;;
+ macppc | ppc | "Power Macintosh")
+ ethr_have_native_atomics=yes;;
+ tile)
+ ethr_have_native_atomics=yes;;
+ *)
+ ;;
+ esac
+
+ AC_MSG_CHECKING([for a usable libatomic_ops implementation])
+ case "x$with_libatomic_ops" in
+ xno | xyes | x)
+ libatomic_ops_include=
+ ;;
+ *)
+ if test -d "${with_libatomic_ops}/include"; then
+ libatomic_ops_include="-I$with_libatomic_ops/include"
+ CPPFLAGS="$CPPFLAGS $libatomic_ops_include"
+ else
+ AC_MSG_ERROR([libatomic_ops include directory $with_libatomic_ops/include not found])
+ fi;;
+ esac
+ ethr_have_libatomic_ops=no
+ AC_TRY_LINK([#include "atomic_ops.h"],
+ [
+ volatile AO_t x;
+ AO_t y;
+ int z;
+
+ AO_nop_full();
+ AO_store(&x, (AO_t) 0);
+ z = AO_load(&x);
+ z = AO_compare_and_swap(&x, (AO_t) 0, (AO_t) 1);
+ ],
+ [ethr_have_native_atomics=yes
+ ethr_have_libatomic_ops=yes])
+ AC_MSG_RESULT([$ethr_have_libatomic_ops])
+ if test $ethr_have_libatomic_ops = yes; then
+ AC_CHECK_SIZEOF(AO_t, ,
+ [
+ #include <stdio.h>
+ #include "atomic_ops.h"
+ ])
+ AC_DEFINE_UNQUOTED(ETHR_SIZEOF_AO_T, $ac_cv_sizeof_AO_t, [Define to the size of AO_t if libatomic_ops is used])
+
+ AC_DEFINE(ETHR_HAVE_LIBATOMIC_OPS, 1, [Define if you have libatomic_ops atomic operations])
+ if test "x$with_libatomic_ops" != "xno" && test "x$with_libatomic_ops" != "x"; then
+ AC_DEFINE(ETHR_PREFER_LIBATOMIC_OPS_NATIVE_IMPLS, 1, [Define if you prefer libatomic_ops native ethread implementations])
+ fi
+ ETHR_DEFS="$ETHR_DEFS $libatomic_ops_include"
+ elif test "x$with_libatomic_ops" != "xno" && test "x$with_libatomic_ops" != "x"; then
+ AC_MSG_ERROR([No usable libatomic_ops implementation found])
+ fi
+
dnl Restore LIBS
LIBS=$saved_libs
dnl restore CPPFLAGS
CPPFLAGS=$saved_cppflags
+
;;
*)
;;
@@ -918,16 +1070,23 @@ fi
if test "x$ETHR_THR_LIB_BASE" != "x"; then
ETHR_DEFS="-DUSE_THREADS $ETHR_DEFS"
- ETHR_LIBS="-l$ethr_lib_name $ETHR_X_LIBS"
+ ETHR_LIBS="-l$ethr_lib_name -lerts_internal_r $ETHR_X_LIBS"
ETHR_LIB_NAME=$ethr_lib_name
fi
AC_CHECK_SIZEOF(void *)
AC_DEFINE_UNQUOTED(ETHR_SIZEOF_PTR, $ac_cv_sizeof_void_p, [Define to the size of pointers])
-if test "X$disable_native_ethr_impls" = "Xyes"; then
- AC_DEFINE(ETHR_DISABLE_NATIVE_IMPLS, 1, [Define if you want to disable native ethread implementations])
-fi
+AC_ARG_ENABLE(native-ethr-impls,
+ AS_HELP_STRING([--disable-native-ethr-impls],
+ [disable native ethread implementations]),
+[ case "$enableval" in
+ no) disable_native_ethr_impls=yes ;;
+ *) disable_native_ethr_impls=no ;;
+ esac ], disable_native_ethr_impls=no)
+
+test "X$disable_native_ethr_impls" = "Xyes" &&
+ AC_DEFINE(ETHR_DISABLE_NATIVE_IMPLS, 1, [Define if you want to disable native ethread implementations])
AC_ARG_ENABLE(prefer-gcc-native-ethr-impls,
AS_HELP_STRING([--enable-prefer-gcc-native-ethr-impls],
@@ -940,6 +1099,21 @@ AC_ARG_ENABLE(prefer-gcc-native-ethr-impls,
test $enable_prefer_gcc_native_ethr_impls = yes &&
AC_DEFINE(ETHR_PREFER_GCC_NATIVE_IMPLS, 1, [Define if you prefer gcc native ethread implementations])
+AC_ARG_ENABLE(ethread-pre-pentium4-compatibility,
+ AS_HELP_STRING([--enable-ethread-pre-pentium4-compatibility],
+ [enable compatibility with x86 processors before pentium 4 (back to 486) in the ethread library]),
+[ case "$enableval" in
+ yes) enable_ethread_pre_pentium4_compatibility=yes ;;
+ *) enable_ethread_pre_pentium4_compatibilit=no ;;
+ esac ], enable_ethread_pre_pentium4_compatibilit=no)
+
+test $enable_ethread_pre_pentium4_compatibilit = yes &&
+ AC_DEFINE(ETHR_PRE_PENTIUM4_COMPAT, 1, [Define if you want compatibilty with x86 processors before pentium4.])
+
+AC_ARG_WITH(libatomic_ops,
+ AS_HELP_STRING([--with-libatomic_ops=PATH],
+ [use libatomic_ops with the ethread library]))
+
AC_DEFINE(ETHR_HAVE_ETHREAD_DEFINES, 1, \
[Define if you have all ethread defines])
@@ -948,6 +1122,7 @@ AC_SUBST(ETHR_LIBS)
AC_SUBST(ETHR_LIB_NAME)
AC_SUBST(ETHR_DEFS)
AC_SUBST(ETHR_THR_LIB_BASE)
+AC_SUBST(ETHR_THR_LIB_BASE_DIR)
])