diff options
Diffstat (limited to 'erts/aclocal.m4')
| -rw-r--r-- | erts/aclocal.m4 | 694 |
1 files changed, 534 insertions, 160 deletions
diff --git a/erts/aclocal.m4 b/erts/aclocal.m4 index 264a1726db..83f735d332 100644 --- a/erts/aclocal.m4 +++ b/erts/aclocal.m4 @@ -1,7 +1,7 @@ dnl dnl %CopyrightBegin% dnl -dnl Copyright Ericsson AB 1998-2013. All Rights Reserved. +dnl Copyright Ericsson AB 1998-2015. All Rights Reserved. dnl dnl The contents of this file are subject to the Erlang Public License, dnl Version 1.1, (the "License"); you may not use this file except in @@ -246,31 +246,31 @@ lbl1: return 1; lbl2: return 2; -],ac_cv_prog_emu_cc=$CC,ac_cv_prog_emu_cc=no) +],ac_cv_prog_emu_cc="$CC",ac_cv_prog_emu_cc=no) -if test $ac_cv_prog_emu_cc = no; then +if test "$ac_cv_prog_emu_cc" = no; then for ac_progname in emu_cc.sh gcc-4.2 gcc; do IFS="${IFS= }"; ac_save_ifs="$IFS"; IFS=":" ac_dummy="$PATH" for ac_dir in $ac_dummy; do test -z "$ac_dir" && ac_dir=. - if test -f $ac_dir/$ac_progname; then - ac_cv_prog_emu_cc=$ac_dir/$ac_progname + if test -f "$ac_dir/$ac_progname"; then + ac_cv_prog_emu_cc="$ac_dir/$ac_progname" break fi done IFS="$ac_save_ifs" - if test $ac_cv_prog_emu_cc != no; then + if test "$ac_cv_prog_emu_cc" != no; then break fi done fi -if test $ac_cv_prog_emu_cc != no; then - save_CC=$CC +if test "$ac_cv_prog_emu_cc" != no; then + save_CC="$CC" save_CFLAGS=$CFLAGS save_CPPFLAGS=$CPPFLAGS - CC=$ac_cv_prog_emu_cc + CC="$ac_cv_prog_emu_cc" CFLAGS="" CPPFLAGS="" AC_TRY_COMPILE([],[ @@ -291,17 +291,17 @@ if test $ac_cv_prog_emu_cc != no; then return 1; lbl2: return 2; - ],ac_cv_prog_emu_cc=$CC,ac_cv_prog_emu_cc=no) + ],ac_cv_prog_emu_cc="$CC",ac_cv_prog_emu_cc=no) CC=$save_CC CFLAGS=$save_CFLAGS CPPFLAGS=$save_CPPFLAGS fi ]) -if test $ac_cv_prog_emu_cc = no; then +if test "$ac_cv_prog_emu_cc" = no; then AC_DEFINE(NO_JUMP_TABLE,[],[Defined if no found C compiler can handle jump tables]) - EMU_CC=$CC + EMU_CC="$CC" else - EMU_CC=$ac_cv_prog_emu_cc + EMU_CC="$ac_cv_prog_emu_cc" fi AC_SUBST(EMU_CC) ]) @@ -724,6 +724,179 @@ esac ])# AC_C_DOUBLE_MIDDLE_ENDIAN +AC_DEFUN(ERL_MONOTONIC_CLOCK, +[ + AC_CACHE_CHECK([for clock_gettime() with monotonic clock type], erl_cv_clock_gettime_monotonic, + [ + for clock_type in CLOCK_HIGHRES CLOCK_MONOTONIC CLOCK_MONOTONIC_PRECISE; do + AC_TRY_COMPILE([ +#include <time.h> + ], + [ + struct timespec ts; + long long result; + clock_gettime($clock_type,&ts); + result = ((long long) ts.tv_sec) * 1000000000LL + + ((long long) ts.tv_nsec); + ], + erl_cv_clock_gettime_monotonic=$clock_type, + erl_cv_clock_gettime_monotonic=no) + test $erl_cv_clock_gettime_monotonic = no || break + done + ]) + + AC_CHECK_FUNCS([clock_getres clock_get_attributes gethrtime]) + + AC_CACHE_CHECK([for mach clock_get_time() with monotonic clock type], erl_cv_mach_clock_get_time_monotonic, + [ + AC_TRY_COMPILE([ +#include <mach/clock.h> +#include <mach/mach.h> + ], + [ + kern_return_t res; + clock_serv_t clk_srv; + mach_timespec_t time_spec; + + host_get_clock_service(mach_host_self(), SYSTEM_CLOCK, &clk_srv); + res = clock_get_time(clk_srv, &time_spec); + mach_port_deallocate(mach_task_self(), clk_srv); + ], + erl_cv_mach_clock_get_time_monotonic=yes, + erl_cv_mach_clock_get_time_monotonic=no) + ]) + + case $erl_cv_clock_gettime_monotonic-$ac_cv_func_gethrtime-$erl_cv_mach_clock_get_time_monotonic-$host_os in + *-*-*-win32) + erl_monotonic_clock_func=WindowsAPI + ;; + CLOCK_*-*-*-linux*) + if test X$cross_compiling != Xyes; then + linux_kernel_vsn_=`uname -r` + case $linux_kernel_vsn_ in + [[0-1]].*|2.[[0-5]]|2.[[0-5]].*) + erl_monotonic_clock_func=times + ;; + *) + erl_monotonic_clock_func=clock_gettime + ;; + esac + else + case X$erl_xcomp_linux_clock_gettime_correction in + X) + AC_MSG_WARN([result clock_gettime guessed because of cross compilation]) + erl_monotonic_clock_func=clock_gettime + ;; + Xyes|Xno) + if test $erl_xcomp_linux_clock_gettime_correction = yes; then + erl_monotonic_clock_func=clock_gettime + else + erl_monotonic_clock_func=times + fi + ;; + *) + AC_MSG_ERROR([Bad erl_xcomp_linux_clock_gettime_correction value: $erl_xcomp_linux_clock_gettime_correction]) + ;; + esac + fi + ;; + no-no-no-linux*) + erl_monotonic_clock_func=times + ;; + CLOCK_*-*-*-*) + erl_monotonic_clock_func=clock_gettime + ;; + no-yes-*-*) + erl_monotonic_clock_func=gethrtime + ;; + no-no-yes-*) + erl_monotonic_clock_func=mach_clock_get_time + ;; + no-no-no-*) + erl_monotonic_clock_func=none + ;; + esac + + erl_monotonic_clock_lib= + erl_monotonic_clock_id= + case $erl_monotonic_clock_func in + clock_gettime) + erl_monotonic_clock_id="$erl_cv_clock_gettime_monotonic" + AC_CHECK_LIB(rt, clock_gettime, [erl_monotonic_clock_lib="-lrt"]) + ;; + mach_clock_get_time) + erl_monotonic_clock_id=SYSTEM_CLOCK + ;; + *) + ;; + esac + +]) + +AC_DEFUN(ERL_WALL_CLOCK, +[ + AC_CACHE_CHECK([for clock_gettime() with wall clock type], erl_cv_clock_gettime_wall, + [ + for clock_type in CLOCK_REALTIME; do + AC_TRY_COMPILE([ +#include <time.h> + ], + [ + struct timespec ts; + long long result; + clock_gettime($clock_type,&ts); + result = ((long long) ts.tv_sec) * 1000000000LL + + ((long long) ts.tv_nsec); + ], + erl_cv_clock_gettime_wall=$clock_type, + erl_cv_clock_gettime_wall=no) + test $erl_cv_clock_gettime_wall = no || break + done + ]) + + AC_CHECK_FUNCS([clock_getres clock_get_attributes gettimeofday]) + + AC_CACHE_CHECK([for mach clock_get_time() with wall clock type], erl_cv_mach_clock_get_time_wall, + [ + AC_TRY_COMPILE([ +#include <mach/clock.h> +#include <mach/mach.h> + ], + [ + kern_return_t res; + clock_serv_t clk_srv; + mach_timespec_t time_spec; + + host_get_clock_service(mach_host_self(), CALENDAR_CLOCK, &clk_srv); + res = clock_get_time(clk_srv, &time_spec); + mach_port_deallocate(mach_task_self(), clk_srv); + ], + erl_cv_mach_clock_get_time_wall=yes, + erl_cv_mach_clock_get_time_wall=no) + ]) + + erl_wall_clock_id= + case $erl_cv_clock_gettime_wall-$erl_cv_mach_clock_get_time_wall-$ac_cv_func_gettimeofday-$host_os in + *-*-*-win32) + erl_wall_clock_func=WindowsAPI + ;; + no-yes-*-*) + erl_wall_clock_func=mach_clock_get_time + erl_wall_clock_id=CALENDAR_CLOCK + ;; + CLOCK_*-*-*-*) + erl_wall_clock_func=clock_gettime + erl_wall_clock_id=$erl_cv_clock_gettime_wall + ;; + no-no-yes-*) + erl_wall_clock_func=gettimeofday + ;; + *) + erl_wall_clock_func=none + ;; + esac +]) + dnl ---------------------------------------------------------------------- dnl dnl LM_CHECK_THR_LIB @@ -908,24 +1081,226 @@ AC_SUBST(ERTS_INTERNAL_X_LIBS) ]) -AC_DEFUN(ETHR_CHK_SYNC_OP, +AC_DEFUN(ETHR_CHK_GCC_ATOMIC_OP__, [ - AC_MSG_CHECKING([for $3-bit $1()]) - case "$2" in - "1") sync_call="$1(&var);";; - "2") sync_call="$1(&var, ($4) 0);";; - "3") sync_call="$1(&var, ($4) 0, ($4) 0);";; + # $1 - atomic_op + + for atomic_bit_size in 32 64 128; do + case $atomic_bit_size in + 32) gcc_atomic_type="$gcc_atomic_type32";; + 64) gcc_atomic_type="$gcc_atomic_type64";; + 128) gcc_atomic_type="$gcc_atomic_type128";; + esac + gcc_atomic_lockfree="int x[[(2*__atomic_always_lock_free(sizeof($gcc_atomic_type), 0))-1]]" + case $1 in + __sync_add_and_fetch | __sync_fetch_and_and | __sync_fetch_and_or) + atomic_call="volatile $gcc_atomic_type var; $gcc_atomic_type res = $1(&var, ($gcc_atomic_type) 0);" + ;; + __sync_val_compare_and_swap) + atomic_call="volatile $gcc_atomic_type var; $gcc_atomic_type res = $1(&var, ($gcc_atomic_type) 0, ($gcc_atomic_type) 0);" + ;; + __atomic_store_n) + atomic_call="$gcc_atomic_lockfree; volatile $gcc_atomic_type var; $1(&var, ($gcc_atomic_type) 0, __ATOMIC_RELAXED); $1(&var, ($gcc_atomic_type) 0, __ATOMIC_RELEASE);" + ;; + __atomic_load_n) + atomic_call="$gcc_atomic_lockfree; volatile $gcc_atomic_type var; $gcc_atomic_type res = $1(&var, __ATOMIC_RELAXED); res = $1(&var, __ATOMIC_ACQUIRE);" + ;; + __atomic_add_fetch| __atomic_fetch_and | __atomic_fetch_or) + atomic_call="$gcc_atomic_lockfree; volatile $gcc_atomic_type var; $gcc_atomic_type res = $1(&var, ($gcc_atomic_type) 0, __ATOMIC_RELAXED); res = $1(&var, ($gcc_atomic_type) 0, __ATOMIC_ACQUIRE); res = $1(&var, ($gcc_atomic_type) 0, __ATOMIC_RELEASE);" + ;; + __atomic_compare_exchange_n) + atomic_call="$gcc_atomic_lockfree; volatile $gcc_atomic_type var; $gcc_atomic_type val; int res = $1(&var, &val, ($gcc_atomic_type) 0, 0, __ATOMIC_RELAXED, __ATOMIC_RELAXED); res = $1(&var, &val, ($gcc_atomic_type) 0, 0, __ATOMIC_ACQUIRE, __ATOMIC_ACQUIRE);" + ;; + *) + AC_MSG_ERROR([Internal error: missing implementation for $1]) + ;; + esac + eval atomic${atomic_bit_size}_call=\"$atomic_call\" + done + + AC_CACHE_CHECK([for 32-bit $1()], ethr_cv_32bit_$1, + [ + ethr_cv_32bit_$1=no + AC_TRY_LINK([], [$atomic32_call], [ethr_cv_32bit_$1=yes]) + ]) + AC_CACHE_CHECK([for 64-bit $1()], ethr_cv_64bit_$1, + [ + ethr_cv_64bit_$1=no + AC_TRY_LINK([], [$atomic64_call], [ethr_cv_64bit_$1=yes]) + ]) + AC_CACHE_CHECK([for 128-bit $1()], ethr_cv_128bit_$1, + [ + ethr_cv_128bit_$1=no + AC_TRY_LINK([], [$atomic128_call], [ethr_cv_128bit_$1=yes]) + ]) + + case $ethr_cv_128bit_$1-$ethr_cv_64bit_$1-$ethr_cv_32bit_$1 in + no-no-no) + have_atomic_ops=0;; + no-no-yes) + have_atomic_ops=4;; + no-yes-no) + have_atomic_ops=8;; + no-yes-yes) + have_atomic_ops=12;; + yes-no-no) + have_atomic_ops=16;; + yes-no-yes) + have_atomic_ops=20;; + yes-yes-no) + have_atomic_ops=24;; + yes-yes-yes) + have_atomic_ops=28;; + esac + AC_DEFINE_UNQUOTED([ETHR_HAVE_$1], [$have_atomic_ops], [Define as a bitmask corresponding to the word sizes that $1() can handle on your system]) +]) + +AC_DEFUN(ETHR_CHK_IF_NOOP, +[ + ethr_test_filename="chk_if_$1$3_noop_config1test.$$" + cat > "${ethr_test_filename}.c" <<EOF +int +my_test(void) +{ + $1$2; + return 0; +} +EOF + $CC -O3 $ETHR_DEFS -c "${ethr_test_filename}.c" -o "${ethr_test_filename}1.o" + cat > "${ethr_test_filename}.c" <<EOF +int +my_test(void) +{ + ; + return 0; +} +EOF + $CC -O3 $ETHR_DEFS -c "${ethr_test_filename}.c" -o "${ethr_test_filename}2.o" + if diff "${ethr_test_filename}1.o" "${ethr_test_filename}2.o" >/dev/null 2>&1; then + ethr_$1$3_noop=yes + else + ethr_$1$3_noop=no + fi + rm -f "${ethr_test_filename}.c" "${ethr_test_filename}1.o" "${ethr_test_filename}2.o" +]) + +AC_DEFUN(ETHR_CHK_GCC_ATOMIC_OPS, +[ + AC_CHECK_SIZEOF(short) + AC_CHECK_SIZEOF(int) + AC_CHECK_SIZEOF(long) + AC_CHECK_SIZEOF(long long) + AC_CHECK_SIZEOF(__int128_t) + + if test "$ac_cv_sizeof_short" = "4"; then + gcc_atomic_type32="short" + elif test "$ac_cv_sizeof_int" = "4"; then + gcc_atomic_type32="int" + elif test "$ac_cv_sizeof_long" = "4"; then + gcc_atomic_type32="long" + else + AC_MSG_ERROR([No 32-bit type found]) + fi + + if test "$ac_cv_sizeof_int" = "8"; then + gcc_atomic_type64="int" + elif test "$ac_cv_sizeof_long" = "8"; then + gcc_atomic_type64="long" + elif test "$ac_cv_sizeof_long_long" = "8"; then + gcc_atomic_type64="long long" + else + AC_MSG_ERROR([No 64-bit type found]) + fi + + if test "$ac_cv_sizeof___int128_t" = "16"; then + gcc_atomic_type128="__int128_t" + else + gcc_atomic_type128="#error " + fi + AC_CACHE_CHECK([for a working __sync_synchronize()], ethr_cv___sync_synchronize, + [ + ethr_cv___sync_synchronize=no + AC_TRY_LINK([], + [ __sync_synchronize(); ], + [ethr_cv___sync_synchronize=yes]) + if test $ethr_cv___sync_synchronize = yes; then + # + # Old gcc versions on at least x86 have a buggy + # __sync_synchronize() which does not emit a + # memory barrier. We try to detect this by + # compiling to assembly with and without + # __sync_synchronize() and compare the results. + # + ETHR_CHK_IF_NOOP(__sync_synchronize, [()], []) + if test $ethr___sync_synchronize_noop = yes; then + # Got a buggy implementation of + # __sync_synchronize... + ethr_cv___sync_synchronize="no; buggy implementation" + fi + fi + ]) + + if test "$ethr_cv___sync_synchronize" = "yes"; then + have_sync_synchronize_value="~0" + else + have_sync_synchronize_value="0" + fi + AC_DEFINE_UNQUOTED([ETHR_HAVE___sync_synchronize], [$have_sync_synchronize_value], [Define as a bitmask corresponding to the word sizes that __sync_synchronize() can handle on your system]) + + ETHR_CHK_GCC_ATOMIC_OP__(__sync_add_and_fetch) + ETHR_CHK_GCC_ATOMIC_OP__(__sync_fetch_and_and) + ETHR_CHK_GCC_ATOMIC_OP__(__sync_fetch_and_or) + ETHR_CHK_GCC_ATOMIC_OP__(__sync_val_compare_and_swap) + + ETHR_CHK_GCC_ATOMIC_OP__(__atomic_store_n) + ETHR_CHK_GCC_ATOMIC_OP__(__atomic_load_n) + ETHR_CHK_GCC_ATOMIC_OP__(__atomic_add_fetch) + ETHR_CHK_GCC_ATOMIC_OP__(__atomic_fetch_and) + ETHR_CHK_GCC_ATOMIC_OP__(__atomic_fetch_or) + ETHR_CHK_GCC_ATOMIC_OP__(__atomic_compare_exchange_n) + + ethr_have_gcc_native_atomics=no + ethr_arm_dbm_instr_val=0 + case "$GCC-$host_cpu" in + yes-arm*) + AC_CACHE_CHECK([for ARM DMB instruction], ethr_cv_arm_dbm_instr, + [ + ethr_cv_arm_dbm_instr=no + AC_TRY_LINK([], + [ + __asm__ __volatile__("dmb sy" : : : "memory"); + __asm__ __volatile__("dmb st" : : : "memory"); + ], + [ethr_cv_arm_dbm_instr=yes]) + ]) + if test $ethr_cv_arm_dbm_instr = yes; then + ethr_arm_dbm_instr_val=1 + test $ethr_cv_64bit___atomic_compare_exchange_n = yes && + ethr_have_gcc_native_atomics=yes + fi;; + *) + ;; esac - have_sync_op=no - AC_TRY_LINK([], - [ - $4 res; - volatile $4 var; - res = $sync_call - ], - [have_sync_op=yes]) - test $have_sync_op = yes && $5 - AC_MSG_RESULT([$have_sync_op]) + AC_DEFINE_UNQUOTED([ETHR_HAVE_GCC_ASM_ARM_DMB_INSTRUCTION], [$ethr_arm_dbm_instr_val], [Define as a boolean indicating whether you have a gcc compatible compiler capable of generating the ARM DMB instruction, and are compiling for an ARM processor with ARM DMB instruction support, or not]) + test $ethr_cv_32bit___sync_val_compare_and_swap = yes && + ethr_have_gcc_native_atomics=yes + test $ethr_cv_64bit___sync_val_compare_and_swap = yes && + ethr_have_gcc_native_atomics=yes + if test "$ethr_cv___sync_synchronize" = "yes"; then + test $ethr_cv_64bit___atomic_compare_exchange_n = yes && + ethr_have_gcc_native_atomics=yes + test $ethr_cv_32bit___atomic_compare_exchange_n = yes && + ethr_have_gcc_native_atomics=yes + fi + ethr_have_gcc_atomic_builtins=0 + if test $ethr_have_gcc_native_atomics = yes; then + ethr_native_atomic_implementation=gcc_sync + test $ethr_cv_32bit___atomic_compare_exchange_n = yes && ethr_have_gcc_atomic_builtins=1 + test $ethr_cv_64bit___atomic_compare_exchange_n = yes && ethr_have_gcc_atomic_builtins=1 + test $ethr_have_gcc_atomic_builtins = 1 && ethr_native_atomic_implementation=gcc_atomic_sync + fi + AC_DEFINE_UNQUOTED([ETHR_HAVE_GCC___ATOMIC_BUILTINS], [$ethr_have_gcc_atomic_builtins], [Define as a boolean indicating whether you have a gcc __atomic builtins or not]) + test $ethr_have_gcc_native_atomics = yes && ethr_have_native_atomics=yes ]) AC_DEFUN(ETHR_CHK_INTERLOCKED, @@ -1005,6 +1380,16 @@ AC_ARG_ENABLE(prefer-gcc-native-ethr-impls, test $enable_prefer_gcc_native_ethr_impls = yes && AC_DEFINE(ETHR_PREFER_GCC_NATIVE_IMPLS, 1, [Define if you prefer gcc native ethread implementations]) +AC_ARG_ENABLE(trust-gcc-atomic-builtins-memory-barriers, + AS_HELP_STRING([--enable-trust-gcc-atomic-builtins-memory-barriers], + [trust gcc atomic builtins memory barriers]), +[ case "$enableval" in + yes) trust_gcc_atomic_builtins_mbs=1 ;; + *) trust_gcc_atomic_builtins_mbs=0 ;; + esac ], trust_gcc_atomic_builtins_mbs=0) + +AC_DEFINE_UNQUOTED(ETHR_TRUST_GCC_ATOMIC_BUILTINS_MEMORY_BARRIERS, [$trust_gcc_atomic_builtins_mbs], [Define as a boolean indicating whether you trust gcc's __atomic_* builtins memory barrier implementations, or not]) + AC_ARG_WITH(libatomic_ops, AS_HELP_STRING([--with-libatomic_ops=PATH], [specify and prefer usage of libatomic_ops in the ethread library])) @@ -1016,12 +1401,33 @@ AC_ARG_WITH(with_sparc_memory_order, LM_CHECK_THR_LIB ERL_INTERNAL_LIBS +ERL_MONOTONIC_CLOCK + +case $erl_monotonic_clock_func in + clock_gettime) + AC_DEFINE(ETHR_HAVE_CLOCK_GETTIME_MONOTONIC, [1], [Define if you have a clock_gettime() with a monotonic clock]) + ;; + mach_clock_get_time) + AC_DEFINE(ETHR_HAVE_MACH_CLOCK_GET_TIME, [1], [Define if you have a mach clock_get_time() with a monotonic clock]) + ;; + gethrtime) + AC_DEFINE(ETHR_HAVE_GETHRTIME, [1], [Define if you have a monotonic gethrtime()]) + ;; + *) + ;; +esac + +if test "x$erl_monotonic_clock_id" != "x"; then + AC_DEFINE_UNQUOTED(ETHR_MONOTONIC_CLOCK_ID, [$erl_monotonic_clock_id], [Define to the monotonic clock id to use]) +fi + +ethr_native_atomic_implementation=none ethr_have_native_atomics=no ethr_have_native_spinlock=no ETHR_THR_LIB_BASE="$THR_LIB_NAME" ETHR_THR_LIB_BASE_TYPE="$THR_LIB_TYPE" ETHR_DEFS="$THR_DEFS" -ETHR_X_LIBS="$THR_LIBS $ERTS_INTERNAL_X_LIBS" +ETHR_X_LIBS="$THR_LIBS $ERTS_INTERNAL_X_LIBS $erl_monotonic_clock_lib" ETHR_LIBS= ETHR_LIB_NAME= @@ -1100,7 +1506,10 @@ case "$THR_LIB_NAME" in ETHR_CHK_INTERLOCKED([_InterlockedCompareExchange128], [4], [__int64], AC_DEFINE_UNQUOTED(ETHR_HAVE__INTERLOCKEDCOMPAREEXCHANGE128, 1, [Define if you have _InterlockedCompareExchange128()])) fi - test "$ethr_have_native_atomics" = "yes" && ethr_have_native_spinlock=yes + if test "$ethr_have_native_atomics" = "yes"; then + ethr_native_atomic_implementation=windows + ethr_have_native_spinlock=yes + fi ;; pthread|ose_threads) @@ -1329,6 +1738,50 @@ case "$THR_LIB_NAME" in AC_DEFINE(ETHR_HAVE_PTHREAD_ATTR_SETGUARDSIZE, 1, \ [Define if you have the pthread_attr_setguardsize function.])) + if test "x$erl_monotonic_clock_id" != "x"; then + AC_MSG_CHECKING(whether pthread_cond_timedwait() can use the monotonic clock $erl_monotonic_clock_id for timeout) + pthread_cond_timedwait_monotonic=no + AC_TRY_LINK([ + #if defined(ETHR_NEED_NPTL_PTHREAD_H) + # include <nptl/pthread.h> + #elif defined(ETHR_HAVE_MIT_PTHREAD_H) + # include <pthread/mit/pthread.h> + #elif defined(ETHR_HAVE_PTHREAD_H) + # include <pthread.h> + #endif + #ifdef ETHR_TIME_WITH_SYS_TIME + # include <time.h> + # include <sys/time.h> + #else + # ifdef ETHR_HAVE_SYS_TIME_H + # include <sys/time.h> + # else + # include <time.h> + # endif + #endif + #if defined(ETHR_HAVE_MACH_CLOCK_GET_TIME) + # include <mach/clock.h> + # include <mach/mach.h> + #endif + ], + [ + int res; + pthread_condattr_t attr; + pthread_cond_t cond; + struct timespec cond_timeout; + pthread_mutex_t mutex; + res = pthread_condattr_init(&attr); + res = pthread_condattr_setclock(&attr, ETHR_MONOTONIC_CLOCK_ID); + res = pthread_cond_init(&cond, &attr); + res = pthread_cond_timedwait(&cond, &mutex, &cond_timeout); + ], + [pthread_cond_timedwait_monotonic=yes]) + AC_MSG_RESULT([$pthread_cond_timedwait_monotonic]) + if test $pthread_cond_timedwait_monotonic = yes; then + AC_DEFINE(ETHR_HAVE_PTHREAD_COND_TIMEDWAIT_MONOTONIC, [1], [Define if pthread_cond_timedwait() can be used with a monotonic clock]) + fi + fi + linux_futex=no AC_MSG_CHECKING([for Linux futexes]) AC_TRY_LINK([ @@ -1400,54 +1853,11 @@ case "$THR_LIB_NAME" in fi ## test "x$THR_LIB_NAME" = "xpthread" - AC_CHECK_SIZEOF(int) - AC_CHECK_SIZEOF(long) - AC_CHECK_SIZEOF(long long) - AC_CHECK_SIZEOF(__int128_t) - - if test "$ac_cv_sizeof_int" = "4"; then - int32="int" - elif test "$ac_cv_sizeof_long" = "4"; then - int32="long" - elif test "$ac_cv_sizeof_long_long" = "4"; then - int32="long long" - else - AC_MSG_ERROR([No 32-bit type found]) - fi - - if test "$ac_cv_sizeof_int" = "8"; then - int64="int" - elif test "$ac_cv_sizeof_long" = "8"; then - int64="long" - elif test "$ac_cv_sizeof_long_long" = "8"; then - int64="long long" - else - AC_MSG_ERROR([No 64-bit type found]) - fi - - int128=no - if test "$ac_cv_sizeof___int128_t" = "16"; then - int128="__int128_t" - fi - if test "X$disable_native_ethr_impls" = "Xyes"; then ethr_have_native_atomics=no else - ETHR_CHK_SYNC_OP([__sync_val_compare_and_swap], [3], [32], [$int32], AC_DEFINE(ETHR_HAVE___SYNC_VAL_COMPARE_AND_SWAP32, 1, [Define if you have __sync_val_compare_and_swap() for 32-bit integers])) - test "$have_sync_op" = "yes" && ethr_have_native_atomics=yes - ETHR_CHK_SYNC_OP([__sync_add_and_fetch], [2], [32], [$int32], AC_DEFINE(ETHR_HAVE___SYNC_ADD_AND_FETCH32, 1, [Define if you have __sync_add_and_fetch() for 32-bit integers])) - ETHR_CHK_SYNC_OP([__sync_fetch_and_and], [2], [32], [$int32], AC_DEFINE(ETHR_HAVE___SYNC_FETCH_AND_AND32, 1, [Define if you have __sync_fetch_and_and() for 32-bit integers])) - ETHR_CHK_SYNC_OP([__sync_fetch_and_or], [2], [32], [$int32], AC_DEFINE(ETHR_HAVE___SYNC_FETCH_AND_OR32, 1, [Define if you have __sync_fetch_and_or() for 32-bit integers])) - - ETHR_CHK_SYNC_OP([__sync_val_compare_and_swap], [3], [64], [$int64], AC_DEFINE(ETHR_HAVE___SYNC_VAL_COMPARE_AND_SWAP64, 1, [Define if you have __sync_val_compare_and_swap() for 64-bit integers])) - test "$have_sync_op" = "yes" && ethr_have_native_atomics=yes - ETHR_CHK_SYNC_OP([__sync_add_and_fetch], [2], [64], [$int64], AC_DEFINE(ETHR_HAVE___SYNC_ADD_AND_FETCH64, 1, [Define if you have __sync_add_and_fetch() for 64-bit integers])) - ETHR_CHK_SYNC_OP([__sync_fetch_and_and], [2], [64], [$int64], AC_DEFINE(ETHR_HAVE___SYNC_FETCH_AND_AND64, 1, [Define if you have __sync_fetch_and_and() for 64-bit integers])) - ETHR_CHK_SYNC_OP([__sync_fetch_and_or], [2], [64], [$int64], AC_DEFINE(ETHR_HAVE___SYNC_FETCH_AND_OR64, 1, [Define if you have __sync_fetch_and_or() for 64-bit integers])) - - if test $int128 != no; then - ETHR_CHK_SYNC_OP([__sync_val_compare_and_swap], [3], [128], [$int128], AC_DEFINE(ETHR_HAVE___SYNC_VAL_COMPARE_AND_SWAP128, 1, [Define if you have __sync_val_compare_and_swap() for 128-bit integers])) - fi + + ETHR_CHK_GCC_ATOMIC_OPS([]) AC_MSG_CHECKING([for a usable libatomic_ops implementation]) case "x$with_libatomic_ops" in @@ -1497,6 +1907,7 @@ case "$THR_LIB_NAME" in #endif ], [ethr_have_native_atomics=yes + ethr_native_atomic_implementation=libatomic_ops ethr_have_libatomic_ops=yes]) AC_MSG_RESULT([$ethr_have_libatomic_ops]) if test $ethr_have_libatomic_ops = yes; then @@ -1528,15 +1939,19 @@ case "$THR_LIB_NAME" in *) AC_MSG_ERROR([Unsupported Sparc memory order: $with_sparc_memory_order]);; esac + ethr_native_atomic_implementation=ethread ethr_have_native_atomics=yes;; i86pc | i*86 | x86_64 | amd64) if test "$enable_x86_out_of_order" = "yes"; then AC_DEFINE(ETHR_X86_OUT_OF_ORDER, 1, [Define if x86/x86_64 out of order instructions should be synchronized]) fi + ethr_native_atomic_implementation=ethread ethr_have_native_atomics=yes;; macppc | ppc | powerpc | "Power Macintosh") + ethr_native_atomic_implementation=ethread ethr_have_native_atomics=yes;; tile) + ethr_native_atomic_implementation=ethread ethr_have_native_atomics=yes;; *) ;; @@ -1709,7 +2124,6 @@ AC_SUBST(ETHR_X86_SSE2_ASM) ]) - dnl ---------------------------------------------------------------------- dnl dnl ERL_TIME_CORRECTION @@ -1725,93 +2139,54 @@ dnl work... dnl AC_DEFUN(ERL_TIME_CORRECTION, -[if test x$ac_cv_func_gethrtime = x; then - AC_CHECK_FUNC(gethrtime) -fi -if test x$clock_gettime_correction = xunknown; then - AC_TRY_COMPILE([#include <time.h>], - [struct timespec ts; - long long result; - clock_gettime(CLOCK_MONOTONIC,&ts); - result = ((long long) ts.tv_sec) * 1000000000LL + - ((long long) ts.tv_nsec);], - clock_gettime_compiles=yes, - clock_gettime_compiles=no) -else - clock_gettime_compiles=no -fi - - -AC_CACHE_CHECK([how to correct for time adjustments], erl_cv_time_correction, [ -case $clock_gettime_correction in - yes) - erl_cv_time_correction=clock_gettime;; - no|unknown) - case $ac_cv_func_gethrtime in - yes) - erl_cv_time_correction=hrtime ;; - no) - case $host_os in - linux*) - case $clock_gettime_correction in - unknown) - if test x$clock_gettime_compiles = xyes; then - if test X$cross_compiling != Xyes; then - linux_kernel_vsn_=`uname -r` - case $linux_kernel_vsn_ in - [[0-1]].*|2.[[0-5]]|2.[[0-5]].*) - erl_cv_time_correction=times ;; - *) - erl_cv_time_correction=clock_gettime;; - esac - else - case X$erl_xcomp_linux_clock_gettime_correction in - X) - erl_cv_time_correction=cross;; - Xyes|Xno) - if test $erl_xcomp_linux_clock_gettime_correction = yes; then - erl_cv_time_correction=clock_gettime - else - erl_cv_time_correction=times - fi;; - *) - AC_MSG_ERROR([Bad erl_xcomp_linux_clock_gettime_correction value: $erl_xcomp_linux_clock_gettime_correction]);; - esac - fi - else - erl_cv_time_correction=times - fi - ;; - *) - erl_cv_time_correction=times ;; - esac - ;; - *) - erl_cv_time_correction=none ;; - esac - ;; - esac - ;; + +ERL_WALL_CLOCK + +case $erl_wall_clock_func in + mach_clock_get_time) + AC_DEFINE(OS_SYSTEM_TIME_USING_MACH_CLOCK_GET_TIME, [1], [Define if you want to implement erts_os_system_time() using mach clock_get_time()]) + ;; + clock_gettime) + AC_DEFINE(OS_SYSTEM_TIME_USING_CLOCK_GETTIME, [1], [Define if you want to implement erts_os_system_time() using clock_gettime()]) + ;; + gettimeofday) + AC_DEFINE(OS_SYSTEM_TIME_GETTIMEOFDAY, [1], [Define if you want to implement erts_os_system_time() using gettimeofday()]) + ;; + *) + ;; esac -]) -xrtlib="" -case $erl_cv_time_correction in +if test "x$erl_wall_clock_id" != "x"; then + AC_DEFINE_UNQUOTED(WALL_CLOCK_ID_STR, ["$erl_wall_clock_id"], [Define as a string of wall clock id to use]) + AC_DEFINE_UNQUOTED(WALL_CLOCK_ID, [$erl_wall_clock_id], [Define to wall clock id to use]) +fi + +ERL_MONOTONIC_CLOCK + +case $erl_monotonic_clock_func in times) - AC_DEFINE(CORRECT_USING_TIMES,[], - [Define if you do not have a high-res. timer & want to use times() instead]) + AC_DEFINE(OS_MONOTONIC_TIME_USING_TIMES, [1], [Define if you want to implement erts_os_monotonic_time() using times()]) ;; - clock_gettime|cross) - if test $erl_cv_time_correction = cross; then - erl_cv_time_correction=clock_gettime - AC_MSG_WARN([result clock_gettime guessed because of cross compilation]) - fi - xrtlib="-lrt" - AC_DEFINE(GETHRTIME_WITH_CLOCK_GETTIME,[1], - [Define if you want to use clock_gettime to simulate gethrtime]) + mach_clock_get_time) + AC_DEFINE(OS_MONOTONIC_TIME_USING_MACH_CLOCK_GET_TIME, [1], [Define if you want to implement erts_os_monotonic_time() using mach clock_get_time()]) + ;; + clock_gettime) + AC_DEFINE(OS_MONOTONIC_TIME_USING_CLOCK_GETTIME, [1], [Define if you want to implement erts_os_monotonic_time() using clock_gettime()]) + ;; + gethrtime) + AC_DEFINE(OS_MONOTONIC_TIME_USING_GETHRTIME, [1], [Define if you want to implement erts_os_monotonic_time() using gethrtime()]) + ;; + *) ;; esac + +xrtlib="$erl_monotonic_clock_lib" +if test "x$erl_monotonic_clock_id" != "x"; then + AC_DEFINE_UNQUOTED(MONOTONIC_CLOCK_ID_STR, ["$erl_monotonic_clock_id"], [Define as a string of monotonic clock id to use]) + AC_DEFINE_UNQUOTED(MONOTONIC_CLOCK_ID, [$erl_monotonic_clock_id], [Define to monotonic clock id to use]) +fi + dnl dnl Check if gethrvtime is working, and if to use procfs ioctl dnl or (yet to be written) write to the procfs ctl file. @@ -1884,6 +2259,7 @@ case X$erl_xcomp_gethrvtime_procfs_ioctl in esac ]) +LIBRT=$xrtlib case $erl_gethrvtime in procfs_ioctl) AC_DEFINE(HAVE_GETHRVTIME_PROCFS_IOCTL,[1], @@ -1950,15 +2326,13 @@ case $erl_gethrvtime in cross) erl_clock_gettime_cpu_time=no AC_MSG_WARN([result no guessed because of cross compilation]) - LIBRT=$xrtlib ;; *) - LIBRT=$xrtlib ;; esac - AC_SUBST(LIBRT) ;; esac +AC_SUBST(LIBRT) ])dnl dnl ---------------------------------------------------------------------- |