diff options
Diffstat (limited to 'erts')
| -rw-r--r-- | erts/aclocal.m4 | 69 | ||||
| -rw-r--r-- | erts/configure.in | 34 | ||||
| -rw-r--r-- | erts/doc/src/erl.xml | 8 | ||||
| -rw-r--r-- | erts/doc/src/erlang.xml | 28 | ||||
| -rw-r--r-- | erts/emulator/beam/erl_nif.c | 4 | ||||
| -rw-r--r-- | erts/emulator/sys/unix/sys.c | 4 | ||||
| -rw-r--r-- | erts/preloaded/ebin/init.beam | bin | 50032 -> 50040 bytes | |||
| -rw-r--r-- | erts/preloaded/src/init.erl | 4 |
8 files changed, 121 insertions, 30 deletions
diff --git a/erts/aclocal.m4 b/erts/aclocal.m4 index 013bfe5652..6c0544da31 100644 --- a/erts/aclocal.m4 +++ b/erts/aclocal.m4 @@ -736,10 +736,23 @@ AC_DEFUN(ERL_MONOTONIC_CLOCK, ;; esac + clock_gettime_lib="" + AC_CHECK_LIB(rt, clock_gettime, [clock_gettime_lib="-lrt"]) + + save_LIBS="$LIBS" + LIBS="$LIBS $clock_gettime_lib" + + if test "$LD_MAY_BE_WEAK" != "no"; then + trust_test="#error May not be there due to weak linking" + else + trust_test="" + fi + AC_CACHE_CHECK([for clock_gettime(CLOCK_MONOTONIC_RAW, _)], erl_cv_clock_gettime_monotonic_raw, [ - AC_TRY_COMPILE([ + AC_TRY_LINK([ #include <time.h> +$trust_test ], [ struct timespec ts; @@ -755,8 +768,9 @@ AC_DEFUN(ERL_MONOTONIC_CLOCK, AC_CACHE_CHECK([for clock_gettime() with ${check_msg}monotonic clock type], erl_cv_clock_gettime_monotonic_$1, [ for clock_type in $prefer_resolution_clock_gettime_monotonic $default_resolution_clock_gettime_monotonic $high_resolution_clock_gettime_monotonic $low_resolution_clock_gettime_monotonic; do - AC_TRY_COMPILE([ + AC_TRY_LINK([ #include <time.h> +$trust_test ], [ struct timespec ts; @@ -771,7 +785,15 @@ AC_DEFUN(ERL_MONOTONIC_CLOCK, done ]) - AC_CHECK_FUNCS([clock_getres clock_get_attributes gethrtime]) + LIBS="$save_LIBS" + + if test "$LD_MAY_BE_WEAK" != "no"; then + check_for_clock_getres= + else + check_for_clock_getres=clock_getres + fi + + AC_CHECK_FUNCS([$check_for_clock_getres clock_get_attributes gethrtime]) AC_CACHE_CHECK([for mach clock_get_time() with monotonic clock type], erl_cv_mach_clock_get_time_monotonic, [ @@ -840,7 +862,7 @@ AC_DEFUN(ERL_MONOTONIC_CLOCK, break fi done - AC_CHECK_LIB(rt, clock_gettime, [erl_monotonic_clock_lib="-lrt"]) + erl_monotonic_clock_lib=$clock_gettime_lib ;; mach_clock_get_time) erl_monotonic_clock_id=SYSTEM_CLOCK @@ -879,11 +901,24 @@ AC_DEFUN(ERL_WALL_CLOCK, ;; esac + clock_gettime_lib="" + AC_CHECK_LIB(rt, clock_gettime, [clock_gettime_lib="-lrt"]) + + save_LIBS="$LIBS" + LIBS="$LIBS $clock_gettime_lib" + + if test "$LD_MAY_BE_WEAK" != "no"; then + trust_test="#error May not be there due to weak linking" + else + trust_test="" + fi + AC_CACHE_CHECK([for clock_gettime() with ${check_msg}wall clock type], erl_cv_clock_gettime_wall_$1, [ for clock_type in $prefer_resolution_clock_gettime_wall $default_resolution_clock_gettime_wall $high_resolution_clock_gettime_wall $low_resolution_clock_gettime_wall; do - AC_TRY_COMPILE([ + AC_TRY_LINK([ #include <time.h> +$trust_test ], [ struct timespec ts; @@ -898,7 +933,15 @@ AC_DEFUN(ERL_WALL_CLOCK, done ]) - AC_CHECK_FUNCS([clock_getres clock_get_attributes gettimeofday]) + LIBS="$save_LIBS" + + if test "$LD_MAY_BE_WEAK" != "no"; then + check_for_clock_getres= + else + check_for_clock_getres=clock_getres + fi + + AC_CHECK_FUNCS([$check_for_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, [ @@ -919,6 +962,7 @@ AC_DEFUN(ERL_WALL_CLOCK, erl_cv_mach_clock_get_time_wall=no) ]) + erl_wall_clock_lib= erl_wall_clock_low_resolution=no erl_wall_clock_id= case $1-$erl_cv_clock_gettime_wall_$1-$erl_cv_mach_clock_get_time_wall-$ac_cv_func_gettimeofday-$host_os in @@ -932,6 +976,7 @@ AC_DEFUN(ERL_WALL_CLOCK, ;; *-CLOCK_*-*-*-*) erl_wall_clock_func=clock_gettime + erl_wall_clock_lib=$clock_gettime_lib erl_wall_clock_id=$erl_cv_clock_gettime_wall_$1 for low_res_id in $low_resolution_clock_gettime_wall; do if test $erl_wall_clock_id = $low_res_id; then @@ -1680,7 +1725,7 @@ case "$THR_LIB_NAME" in 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([ + AC_TRY_LINK([ #ifdef ETHR_HAVE_SCHED_H #include <sched.h> #endif @@ -1699,7 +1744,7 @@ case "$THR_LIB_NAME" in 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([ + AC_TRY_LINK([ #if defined(ETHR_NEED_NPTL_PTHREAD_H) #include <nptl/pthread.h> #elif defined(ETHR_HAVE_MIT_PTHREAD_H) @@ -2436,7 +2481,13 @@ if test $erl_monotonic_clock_low_resolution = yes; then AC_DEFINE(ERTS_HAVE_LOW_RESOLUTION_OS_MONOTONIC_LOW, [1], [Define if you have a low resolution OS monotonic clock]) fi -xrtlib="$erl_monotonic_clock_lib" +xrtlib= +if test "$erl_monotonic_clock_lib" != ""; then + xrtlib="$erl_monotonic_clock_lib" +fi +if test "$erl_wall_clock_lib" != ""; then + xrtlib="$erl_wall_clock_lib" +fi 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, [$erl_monotonic_clock_id], [Define to monotonic clock id to use]) diff --git a/erts/configure.in b/erts/configure.in index 8568b7c8ae..b276f8bdfb 100644 --- a/erts/configure.in +++ b/erts/configure.in @@ -867,6 +867,22 @@ dnl for now that is the way we do it. USER_LD=$LD USER_LDFLAGS="$LDFLAGS" LD='$(CC)' +case $host_os in + darwin*) + saved_LDFLAGS="$LDFLAGS" + LDFLAGS="$LDFLAGS -Wl,-no_weak_imports" + AC_TRY_LINK([],[], + [ + LD_MAY_BE_WEAK=no + ], + [ + LD_MAY_BE_WEAK=yes + LDFLAGS="$saved_LDFLAGS" + ]);; + *) + LD_MAY_BE_WEAK=no;; +esac + AC_SUBST(LD) LDFLAG_RUNTIME_LIBRARY_PATH="$CFLAG_RUNTIME_LIBRARY_PATH" @@ -1941,7 +1957,7 @@ getaddrinfo("","",NULL,NULL); if test $have_getaddrinfo = yes; then AC_MSG_RESULT([yes]) AC_MSG_CHECKING([whether getaddrinfo accepts enough flags]) - AC_TRY_COMPILE([ + AC_TRY_LINK([ #include <stdlib.h> #include <string.h> #ifdef HAVE_WINSOCK2_H @@ -2056,7 +2072,7 @@ int main(void) { fi]);; esac -if test $have_posix_memalign = yes; then +if test "$have_posix_memalign" = "yes"; then AC_DEFINE(HAVE_POSIX_MEMALIGN,[1], [Define to 1 if you have the `posix_memalign' function.]) fi @@ -2198,7 +2214,7 @@ dnl Checks for features/quirks in the system that affects Erlang. dnl ---------------------------------------------------------------------- AC_MSG_CHECKING([for sched_getaffinity/sched_setaffinity]) -AC_TRY_COMPILE([#include <sched.h>], +AC_TRY_LINK([#include <sched.h>], [ #ifndef CPU_SETSIZE #error no CPU_SETSIZE @@ -2221,7 +2237,7 @@ fi AC_MSG_CHECKING([for pset functionality]) -AC_TRY_COMPILE([#include <sys/pset.h>], +AC_TRY_LINK([#include <sys/pset.h>], [ int res; psetid_t id = PS_MYID; @@ -2239,7 +2255,7 @@ if test $pset_functionality = yes; then fi AC_MSG_CHECKING([for processor_bind functionality]) -AC_TRY_COMPILE([ +AC_TRY_LINK([ #include <sys/types.h> #include <sys/processor.h> #include <sys/procset.h> @@ -2255,7 +2271,7 @@ if test $processor_bind_functionality = yes; then fi AC_MSG_CHECKING([for cpuset_getaffinity/cpuset_setaffinity]) -AC_TRY_COMPILE([ +AC_TRY_LINK([ #include <sys/param.h> #include <sys/cpuset.h> ], @@ -2454,7 +2470,7 @@ if test "x$ac_cv_func_sbrk" = "xyes"; then for rtype in $ret_types; do for atype in $arg_types; do IFS=$save_ifs - AC_TRY_COMPILE([#include <sys/types.h> + AC_TRY_LINK([#include <sys/types.h> #include <unistd.h>], [$rtype sbrk($atype incr);], [erts_cv_sbrk_ret_arg_types="$rtype,$atype"]) @@ -2491,7 +2507,7 @@ if test $ac_cv_func_brk = yes; then for rtype in $ret_types; do for atype in $arg_types; do IFS=$save_ifs - AC_TRY_COMPILE([#include <sys/types.h> + AC_TRY_LINK([#include <sys/types.h> #include <unistd.h>], [$rtype brk($atype endds);], [erts_cv_brk_ret_arg_types="$rtype,$atype"]) @@ -3513,7 +3529,7 @@ fi # if test $have_kernel_poll = epoll; then AC_MSG_CHECKING([whether epoll is level triggered]) - AC_TRY_COMPILE([#include <sys/epoll.h>],[ + AC_TRY_LINK([#include <sys/epoll.h>],[ #ifdef EPOLLET /* Edge triggered option exist, assume level triggered is default */ diff --git a/erts/doc/src/erl.xml b/erts/doc/src/erl.xml index f62d3fb170..eb1d24cf12 100644 --- a/erts/doc/src/erl.xml +++ b/erts/doc/src/erl.xml @@ -393,9 +393,11 @@ <tag><c><![CDATA[-pa Dir1 Dir2 ...]]></c></tag> <item> <p>Adds the specified directories to the beginning of the code - path, similar to <c><![CDATA[code:add_pathsa/1]]></c>; see - <seealso marker="kernel:code"><c>code(3)</c></seealso>. - As an alternative to <c>-pa</c>, if several directories are + path, similar to <seealso marker="kernel:code#add_pathsa/1"> + <c><![CDATA[code:add_pathsa/1]]></c></seealso>. Note that the + order of the given directories will be reversed in the + resulting path.</p> + <p>As an alternative to <c>-pa</c>, if several directories are to be prepended to the code path and the directories have a common parent directory, that parent directory can be specified in environment variable <c>ERL_LIBS</c>; see diff --git a/erts/doc/src/erlang.xml b/erts/doc/src/erlang.xml index f318f28b6d..7c4edb319e 100644 --- a/erts/doc/src/erlang.xml +++ b/erts/doc/src/erlang.xml @@ -516,7 +516,14 @@ Z = erlang:adler32_combine(X,Y,iolist_size(Data2)).</code> <desc> <p>Returns an Erlang term that is the result of decoding binary object <c><anno>Binary</anno></c>, which must be encoded - according to the Erlang external term format.</p> + according to the <seealso marker="erts:erl_ext_dist"> + Erlang external term format</seealso>.</p> + <pre> +> <input>Bin = term_to_binary(hello).</input> +<<131,100,0,5,104,101,108,108,111>> +> <input>hello = binary_to_term(Bin).</input> +hello +</pre> <warning> <p>When decoding binaries from untrusted sources, consider using <c>binary_to_term/2</c> to prevent Denial @@ -555,6 +562,14 @@ Z = erlang:adler32_combine(X,Y,iolist_size(Data2)).</code> </taglist> <p>Failure: <c>badarg</c> if <c>safe</c> is specified and unsafe data is decoded.</p> + <pre> +> <input>binary_to_term(<<131,100,0,5,104,101,108,108,111>>, [safe]).</input> +** exception error: bad argument +> <input>hello.</input> +hello +> <input>binary_to_term(<<131,100,0,5,104,101,108,108,111>>, [safe]).</input> +hello +</pre> <p>See also <seealso marker="#term_to_binary/1"><c>term_to_binary/1</c></seealso>, <seealso marker="#binary_to_term/1"> @@ -8629,12 +8644,19 @@ ok </fsummary> <desc> <p>Returns a binary data object that is the result of encoding - <c><anno>Term</anno></c> according to the Erlang external - term format.</p> + <c><anno>Term</anno></c> according to the + <seealso marker="erts:erl_ext_dist">Erlang external + term format.</seealso></p> <p>This can be used for various purposes, for example, writing a term to a file in an efficient way, or sending an Erlang term to some type of communications channel not supported by distributed Erlang.</p> + <pre> +> <input>Bin = term_to_binary(hello).</input> +<<131,100,0,5,104,101,108,108,111>> +> <input>hello = binary_to_term(Bin).</input> +hello +</pre> <p>See also <seealso marker="#binary_to_term/1"> <c>binary_to_term/1</c></seealso>.</p> </desc> diff --git a/erts/emulator/beam/erl_nif.c b/erts/emulator/beam/erl_nif.c index 7442e99cb3..8975eca65d 100644 --- a/erts/emulator/beam/erl_nif.c +++ b/erts/emulator/beam/erl_nif.c @@ -3339,7 +3339,7 @@ BIF_RETTYPE load_nif_2(BIF_ALIST_2) erts_post_nif(&env); if (veto) { prev_mi->nif->priv_data = prev_old_data; - ret = load_nif_error(BIF_P, upgrade, "Library upgrade-call unsuccessful."); + ret = load_nif_error(BIF_P, upgrade, "Library upgrade-call unsuccessful (%d).", veto); } else commit_opened_resource_types(lib); @@ -3349,7 +3349,7 @@ BIF_RETTYPE load_nif_2(BIF_ALIST_2) veto = entry->load(&env, &lib->priv_data, BIF_ARG_2); erts_post_nif(&env); if (veto) { - ret = load_nif_error(BIF_P, "load", "Library load-call unsuccessful."); + ret = load_nif_error(BIF_P, "load", "Library load-call unsuccessful (%d).", veto); } else commit_opened_resource_types(lib); diff --git a/erts/emulator/sys/unix/sys.c b/erts/emulator/sys/unix/sys.c index 089efec3e8..b0e623a5b9 100644 --- a/erts/emulator/sys/unix/sys.c +++ b/erts/emulator/sys/unix/sys.c @@ -715,13 +715,13 @@ static RETSIGTYPE suspend_signal(void) static RETSIGTYPE suspend_signal(int signum) #endif { - int res, buf[1], __errno = errno; + int res, buf[1], tmp_errno = errno; do { res = read(sig_suspend_fds[0], buf, sizeof(int)); } while (res < 0 && errno == EINTR); /* restore previous errno in case read changed it */ - errno = __errno; + errno = tmp_errno; } #endif /* #ifdef ERTS_SYS_SUSPEND_SIGNAL */ diff --git a/erts/preloaded/ebin/init.beam b/erts/preloaded/ebin/init.beam Binary files differindex 849273f746..74a0184818 100644 --- a/erts/preloaded/ebin/init.beam +++ b/erts/preloaded/ebin/init.beam diff --git a/erts/preloaded/src/init.erl b/erts/preloaded/src/init.erl index 962528f7ab..551ca4ea40 100644 --- a/erts/preloaded/src/init.erl +++ b/erts/preloaded/src/init.erl @@ -205,7 +205,7 @@ boot(BootArgs) -> {Start0,Flags,Args} = parse_boot_args(BootArgs), %% We don't get to profile parsing of BootArgs - case get_flag(profile_boot, Flags, false) of + case b2a(get_flag(profile_boot, Flags, false)) of false -> ok; true -> debug_profile_start() end, @@ -782,7 +782,7 @@ do_boot(Init,Flags,Start) -> (catch erlang:system_info({purify, "Node: " ++ atom_to_list(node())})), start_em(Start), - case get_flag(profile_boot,Flags,false) of + case b2a(get_flag(profile_boot,Flags,false)) of false -> ok; true -> debug_profile_format_mfas(debug_profile_mfas()), |