diff options
Diffstat (limited to 'erts/lib_src')
| -rw-r--r-- | erts/lib_src/Makefile.in | 31 | ||||
| -rw-r--r-- | erts/lib_src/pthread/ethread.c | 49 |
2 files changed, 52 insertions, 28 deletions
diff --git a/erts/lib_src/Makefile.in b/erts/lib_src/Makefile.in index 54ee7410fd..ea80e74100 100644 --- a/erts/lib_src/Makefile.in +++ b/erts/lib_src/Makefile.in @@ -1,7 +1,7 @@ # # %CopyrightBegin% # -# Copyright Ericsson AB 2004-2011. All Rights Reserved. +# Copyright Ericsson AB 2004-2012. All Rights Reserved. # # The contents of this file are subject to the Erlang Public License, # Version 1.1, (the "License"); you may not use this file except in @@ -318,10 +318,14 @@ ETHREAD_LIB= endif +_create_dirs := $(shell mkdir -p $(CREATE_DIRS)) # # Everything to build # -all: $(CREATE_DIRS) $(ETHREAD_LIB) $(ERTS_LIBS) $(ERTS_INTERNAL_LIBS) +.PHONY: all +all: $(OBJ_DIR)/MADE + +$(OBJ_DIR)/MADE: $(ETHREAD_LIB) $(ERTS_LIBS) $(ERTS_INTERNAL_LIBS) ifeq ($(OMIT_OMIT_FP),yes) @echo '* * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * *' @echo '* * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * *' @@ -331,6 +335,8 @@ ifeq ($(OMIT_OMIT_FP),yes) @echo '* * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * *' @echo '* * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * *' endif + echo $? > $(OBJ_DIR)/MADE + # # The libs ... # @@ -428,13 +434,6 @@ $(MTd_OBJ_DIR)/%.o: $(ETHR_THR_LIB_BASE_DIR)/%.c $(CC) $(THR_DEFS) $(CFLAGS) -MTd $(INCLUDES) -c $< -o $@ # -# Create directories -# - -$(CREATE_DIRS): - $(MKDIR) -p $@ - -# # Install # @@ -471,6 +470,7 @@ INTERNAL_RELEASE_LIBS= \ $(ETHREAD_LIB) \ $(ERTS_INTERNAL_LIBS) +.PHONY: release_spec release_spec: all ifneq ($(strip $(RELEASE_INCLUDES)),) $(INSTALL_DIR) $(RELSYSDIR)/include @@ -500,19 +500,20 @@ ifneq ($(strip $(INTERNAL_RELEASE_LIBS)),) $(INSTALL_DATA) $(INTERNAL_RELEASE_LIBS) $(RELSYSDIR)/lib/internal endif +.PHONY: docs docs: +.PHONY: release_docs_spec release_docs_spec: - # # Cleanup # +.PHONY: clean clean: $(RM) -rf ../lib/internal/$(TARGET)/* $(RM) -rf ../lib/$(TARGET)/* $(RM) -rf obj/$(TARGET)/* - $(RM) -f $(TARGET)/depend.mk # # Make dependencies @@ -554,9 +555,11 @@ SED_MDd_DEPEND=sed '$(SED_PREFIX)$(SED_REPL_MDd_O);$(SED_REPL_TT_DIR);$(SED_REPL SED_MT_DEPEND=sed '$(SED_PREFIX)$(SED_REPL_MT_O);$(SED_REPL_TT_DIR);$(SED_REPL_TARGET)' SED_MTd_DEPEND=sed '$(SED_PREFIX)$(SED_REPL_MTd_O);$(SED_REPL_TT_DIR);$(SED_REPL_TARGET)' -DEPEND_MK=$(TARGET)/depend.mk +DEPEND_MK=$(OBJ_DIR)/depend.mk -depend: +.PHONY: depend +depend: $(DEPEND_MK) +$(DEPEND_MK): @echo "Generating dependency file $(DEPEND_MK)..." @echo "# Generated dependency rules" > $(DEPEND_MK); @echo "# " >> $(DEPEND_MK); @@ -629,6 +632,8 @@ endif endif @echo "# EOF" >> $(DEPEND_MK); +ifneq ($(MAKECMDGOALS),clean) -include $(DEPEND_MK) +endif # eof diff --git a/erts/lib_src/pthread/ethread.c b/erts/lib_src/pthread/ethread.c index ad29249bac..fb7d135418 100644 --- a/erts/lib_src/pthread/ethread.c +++ b/erts/lib_src/pthread/ethread.c @@ -123,34 +123,53 @@ ethr_ts_event *ethr_get_tse__(void) #if defined(ETHR_PPC_RUNTIME_CONF__) -static volatile int lwsync_caused_sigill; +#include <sys/wait.h> static void handle_lwsync_sigill(int signum) { - lwsync_caused_sigill = 1; + _exit(1); } static int ppc_init__(void) { - struct sigaction act, oact; - lwsync_caused_sigill = 0; + int pid; - sigemptyset(&act.sa_mask); - act.sa_flags = 0; - act.sa_handler = handle_lwsync_sigill; - if (sigaction(SIGILL, &act, &oact) != 0) - return errno; + /* If anything what so ever failes we assume no lwsync for safety */ + ethr_runtime__.conf.have_lwsync = 0; + + /* + * We perform the lwsync test (which might cause an illegal + * instruction signal) in a separate process in order to be + * completely certain that we do not mess up our own state. + */ + pid = fork(); + if (pid == 0) { + struct sigaction act, oact; - __asm__ __volatile__ ("lwsync\n\t" : : : "memory"); + sigemptyset(&act.sa_mask); + act.sa_flags = SA_RESETHAND; + act.sa_handler = handle_lwsync_sigill; + if (sigaction(SIGILL, &act, &oact) != 0) + _exit(2); - act.sa_flags = 0; - act.sa_handler = SIG_DFL; - if (sigaction(SIGILL, &act, &oact) != 0) - return errno; + __asm__ __volatile__ ("lwsync\n\t" : : : "memory"); + + _exit(0); + } - ethr_runtime__.conf.have_lwsync = (int) !lwsync_caused_sigill; + if (pid != -1) { + while (1) { + int status, res; + res = waitpid(pid, &status, 0); + if (res == pid) { + if (WIFEXITED(status) && WEXITSTATUS(status) == 0) + ethr_runtime__.conf.have_lwsync = 1; + break; + } + } + } return 0; } |