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-rw-r--r--erts/lib_src/Makefile.in31
-rw-r--r--erts/lib_src/common/erl_misc_utils.c2
-rw-r--r--erts/lib_src/pthread/ethread.c49
3 files changed, 53 insertions, 29 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/common/erl_misc_utils.c b/erts/lib_src/common/erl_misc_utils.c
index 5e94ff19db..4806311dfe 100644
--- a/erts/lib_src/common/erl_misc_utils.c
+++ b/erts/lib_src/common/erl_misc_utils.c
@@ -834,8 +834,8 @@ read_topology(erts_cpu_info_t *cpuinfo)
ix = -1;
if (realpath(ERTS_SYS_NODE_PATH, npath)) {
- got_nodes = 1;
ndir = opendir(npath);
+ got_nodes = (ndir != NULL);
}
do {
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;
}