mirror of https://github.com/gcc-mirror/gcc.git
runtime: call timer functions via syscall
It turns out to be painful to require linking against -lrt on GNU/Linux, as that makes it harder to link Go code into C programs. Instead just call the timer syscalls directly. That is what the upstream library does anyhow. gcc/go/ * gospec.cc: Revert 2022-02-09 change: (RTLIB, RT_LIBRARY): Don't define. (lang_specific_driver): Don't add -lrt if linking statically on GNU/Linux. gotools/ * configure.ac: Revert 2022-02-09 change: (RT_LIBS): Don't define. * Makefile.am (check-runtime): Don't set GOLIBS to $(RT_LIBS). * configure, Makefile.in: Regenerate. Reviewed-on: https://go-review.googlesource.com/c/gofrontend/+/385475devel/mold-lto-plugin-v2
Ian Lance Taylor
parent
033ec967ec
commit
58aeb75d40
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@ -1,4 +1,4 @@
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7f8fee099d6de4a5a857765e0ddfae356ead554c
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0af68c0552341a44f1fb12301f9eff954b9dde88
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The first line of this file holds the git revision number of the last
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merge done from the gofrontend repository.
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@ -29,12 +29,10 @@ along with GCC; see the file COPYING3. If not see
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#define MATHLIB (1<<2)
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/* This bit is set if they did `-lpthread'. */
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#define THREADLIB (1<<3)
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/* This bit is set if they did `-lrt'. */
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#define RTLIB (1<<4)
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/* This bit is set if they did `-lc'. */
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#define WITHLIBC (1<<5)
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#define WITHLIBC (1<<4)
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/* Skip this option. */
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#define SKIPOPT (1<<6)
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#define SKIPOPT (1<<5)
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#ifndef MATH_LIBRARY
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#define MATH_LIBRARY "m"
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@ -46,8 +44,6 @@ along with GCC; see the file COPYING3. If not see
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#define THREAD_LIBRARY "pthread"
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#define THREAD_LIBRARY_PROFILE THREAD_LIBRARY
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#define RT_LIBRARY "rt"
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#define LIBGO "go"
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#define LIBGO_PROFILE LIBGO
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#define LIBGOBEGIN "gobegin"
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@ -78,9 +74,6 @@ lang_specific_driver (struct cl_decoded_option **in_decoded_options,
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/* "-lpthread" if it appears on the command line. */
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const struct cl_decoded_option *saw_thread = 0;
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/* "-lrt" if it appears on the command line. */
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const struct cl_decoded_option *saw_rt = 0;
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/* "-lc" if it appears on the command line. */
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const struct cl_decoded_option *saw_libc = 0;
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@ -91,9 +84,6 @@ lang_specific_driver (struct cl_decoded_option **in_decoded_options,
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/* Whether we need the thread library. */
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int need_thread = 0;
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/* Whether we need the rt library. */
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int need_rt = 0;
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/* By default, we throw on the math library if we have one. */
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int need_math = (MATH_LIBRARY[0] != '\0');
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@ -166,8 +156,6 @@ lang_specific_driver (struct cl_decoded_option **in_decoded_options,
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}
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else if (strcmp (arg, THREAD_LIBRARY) == 0)
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args[i] |= THREADLIB;
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else if (strcmp (arg, RT_LIBRARY) == 0)
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args[i] |= RTLIB;
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else if (strcmp (arg, "c") == 0)
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args[i] |= WITHLIBC;
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else
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@ -272,7 +260,7 @@ lang_specific_driver (struct cl_decoded_option **in_decoded_options,
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#endif
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/* Make sure to have room for the trailing NULL argument. */
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num_args = argc + need_math + shared_libgcc + (library > 0) * 6 + 10;
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num_args = argc + need_math + shared_libgcc + (library > 0) * 5 + 10;
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new_decoded_options = XNEWVEC (struct cl_decoded_option, num_args);
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i = 0;
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@ -326,12 +314,6 @@ lang_specific_driver (struct cl_decoded_option **in_decoded_options,
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saw_thread = &decoded_options[i];
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}
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if (!saw_rt && (args[i] & RTLIB) && library > 0)
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{
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--j;
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saw_rt = &decoded_options[i];
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}
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if (!saw_libc && (args[i] & WITHLIBC) && library > 0)
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{
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--j;
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@ -413,23 +395,9 @@ lang_specific_driver (struct cl_decoded_option **in_decoded_options,
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#endif
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/* When linking libgo statically we also need to link with the
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pthread and (on GNU/Linux) the rt library. */
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pthread library. */
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if (library > 1 || static_link)
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{
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need_thread = 1;
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if (strstr (DEFAULT_TARGET_MACHINE, "linux") != NULL)
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need_rt = 1;
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}
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}
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if (saw_rt)
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new_decoded_options[j++] = *saw_rt;
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else if (library > 0 && need_rt)
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{
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generate_option (OPT_l, RT_LIBRARY, 1, CL_DRIVER,
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&new_decoded_options[j]);
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added_libraries++;
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j++;
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need_thread = 1;
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}
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if (saw_thread)
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@ -248,14 +248,12 @@ check-runtime: go$(EXEEXT) $(noinst_PROGRAMS) check-head check-gccgo check-gcc
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GOARCH=`$(abs_builddir)/go$(EXEEXT) env GOARCH`; \
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GOOS=`$(abs_builddir)/go$(EXEEXT) env GOOS`; \
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files=`$(SHELL) $(libgosrcdir)/../match.sh --goarch=$${GOARCH} --goos=$${GOOS} --srcdir=$(libgosrcdir)/runtime --extrafiles="$(libgodir)/runtime_linknames.go $(libgodir)/runtime_sysinfo.go $(libgodir)/sigtab.go $(libgodir)/goroot.go" --tag=libffi`; \
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echo "$(ECHO_ENV) GC='$(abs_builddir)/check-gccgo -fgo-compiling-runtime' GOARCH=$${GOARCH} GOOS=$${GOOS} GOLIBS='$(RT_LIBS)' $(SHELL) $(libgosrcdir)/../testsuite/gotest --goarch=$${GOARCH} --goos=$${GOOS} --basedir=$(libgosrcdir)/.. --srcdir=$(libgosrcdir)/runtime --pkgpath=runtime --pkgfiles='$${files}' $(GOTESTFLAGS) -test.timeout=$(GOTOOLS_TEST_TIMEOUT)s -test.v" > runtime-testlog
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echo "$(ECHO_ENV) GC='$(abs_builddir)/check-gccgo -fgo-compiling-runtime' GOARCH=$${GOARCH} GOOS=$${GOOS} $(SHELL) $(libgosrcdir)/../testsuite/gotest --goarch=$${GOARCH} --goos=$${GOOS} --basedir=$(libgosrcdir)/.. --srcdir=$(libgosrcdir)/runtime --pkgpath=runtime --pkgfiles='$${files}' $(GOTESTFLAGS) -test.timeout=$(GOTOOLS_TEST_TIMEOUT)s -test.v" > runtime-testlog
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$(CHECK_ENV) \
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GC="$${GCCGO} -fgo-compiling-runtime"; \
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export GC; \
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GOARCH=`$(abs_builddir)/go$(EXEEXT) env GOARCH`; \
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GOOS=`$(abs_builddir)/go$(EXEEXT) env GOOS`; \
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GOLIBS="$(RT_LIBS)"; \
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export GOLIBS; \
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files=`$(SHELL) $(libgosrcdir)/../match.sh --goarch=$${GOARCH} --goos=$${GOOS} --srcdir=$(libgosrcdir)/runtime --extrafiles="$(libgodir)/runtime_linknames.go $(libgodir)/runtime_sysinfo.go $(libgodir)/sigtab.go $(libgodir)/goroot.go" --tag=libffi`; \
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$(SHELL) $(libgosrcdir)/../testsuite/gotest --goarch=$${GOARCH} --goos=$${GOOS} --basedir=$(libgosrcdir)/.. --srcdir=$(libgosrcdir)/runtime --pkgpath=runtime --pkgfiles="$${files}" $(GOTESTFLAGS) -test.timeout=$(GOTOOLS_TEST_TIMEOUT)s -test.v >> runtime-testlog 2>&1 || echo "--- $${fl}: go test runtime (0.00s)" >> runtime-testlog
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grep '^--- ' runtime-testlog | sed -e 's/^--- \(.*\) ([^)]*)$$/\1/' | sort -k 2
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@ -269,7 +269,6 @@ PACKAGE_TARNAME = @PACKAGE_TARNAME@
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PACKAGE_URL = @PACKAGE_URL@
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PACKAGE_VERSION = @PACKAGE_VERSION@
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PATH_SEPARATOR = @PATH_SEPARATOR@
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RT_LIBS = @RT_LIBS@
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SET_MAKE = @SET_MAKE@
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SHELL = @SHELL@
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STRIP = @STRIP@
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@ -920,14 +919,12 @@ mostlyclean-local:
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@NATIVE_TRUE@ GOARCH=`$(abs_builddir)/go$(EXEEXT) env GOARCH`; \
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@NATIVE_TRUE@ GOOS=`$(abs_builddir)/go$(EXEEXT) env GOOS`; \
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@NATIVE_TRUE@ files=`$(SHELL) $(libgosrcdir)/../match.sh --goarch=$${GOARCH} --goos=$${GOOS} --srcdir=$(libgosrcdir)/runtime --extrafiles="$(libgodir)/runtime_linknames.go $(libgodir)/runtime_sysinfo.go $(libgodir)/sigtab.go $(libgodir)/goroot.go" --tag=libffi`; \
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@NATIVE_TRUE@ echo "$(ECHO_ENV) GC='$(abs_builddir)/check-gccgo -fgo-compiling-runtime' GOARCH=$${GOARCH} GOOS=$${GOOS} GOLIBS='$(RT_LIBS)' $(SHELL) $(libgosrcdir)/../testsuite/gotest --goarch=$${GOARCH} --goos=$${GOOS} --basedir=$(libgosrcdir)/.. --srcdir=$(libgosrcdir)/runtime --pkgpath=runtime --pkgfiles='$${files}' $(GOTESTFLAGS) -test.timeout=$(GOTOOLS_TEST_TIMEOUT)s -test.v" > runtime-testlog
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@NATIVE_TRUE@ echo "$(ECHO_ENV) GC='$(abs_builddir)/check-gccgo -fgo-compiling-runtime' GOARCH=$${GOARCH} GOOS=$${GOOS} $(SHELL) $(libgosrcdir)/../testsuite/gotest --goarch=$${GOARCH} --goos=$${GOOS} --basedir=$(libgosrcdir)/.. --srcdir=$(libgosrcdir)/runtime --pkgpath=runtime --pkgfiles='$${files}' $(GOTESTFLAGS) -test.timeout=$(GOTOOLS_TEST_TIMEOUT)s -test.v" > runtime-testlog
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@NATIVE_TRUE@ $(CHECK_ENV) \
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@NATIVE_TRUE@ GC="$${GCCGO} -fgo-compiling-runtime"; \
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@NATIVE_TRUE@ export GC; \
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@NATIVE_TRUE@ GOARCH=`$(abs_builddir)/go$(EXEEXT) env GOARCH`; \
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@NATIVE_TRUE@ GOOS=`$(abs_builddir)/go$(EXEEXT) env GOOS`; \
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@NATIVE_TRUE@ GOLIBS="$(RT_LIBS)"; \
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@NATIVE_TRUE@ export GOLIBS; \
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@NATIVE_TRUE@ files=`$(SHELL) $(libgosrcdir)/../match.sh --goarch=$${GOARCH} --goos=$${GOOS} --srcdir=$(libgosrcdir)/runtime --extrafiles="$(libgodir)/runtime_linknames.go $(libgodir)/runtime_sysinfo.go $(libgodir)/sigtab.go $(libgodir)/goroot.go" --tag=libffi`; \
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@NATIVE_TRUE@ $(SHELL) $(libgosrcdir)/../testsuite/gotest --goarch=$${GOARCH} --goos=$${GOOS} --basedir=$(libgosrcdir)/.. --srcdir=$(libgosrcdir)/runtime --pkgpath=runtime --pkgfiles="$${files}" $(GOTESTFLAGS) -test.timeout=$(GOTOOLS_TEST_TIMEOUT)s -test.v >> runtime-testlog 2>&1 || echo "--- $${fl}: go test runtime (0.00s)" >> runtime-testlog
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@NATIVE_TRUE@ grep '^--- ' runtime-testlog | sed -e 's/^--- \(.*\) ([^)]*)$$/\1/' | sort -k 2
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@ -586,7 +586,6 @@ ac_subst_vars='am__EXEEXT_FALSE
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am__EXEEXT_TRUE
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LTLIBOBJS
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LIBOBJS
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RT_LIBS
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NET_LIBS
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NATIVE_FALSE
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NATIVE_TRUE
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@ -4212,12 +4211,6 @@ if test "$ac_res" != no; then :
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fi
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RT_LIBS=
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case ${target} in
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*-*-linux*) RT_LIBS=-lrt ;;
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esac
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ac_config_files="$ac_config_files Makefile"
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@ -85,15 +85,6 @@ dnl Test if -lrt is required for sched_yield and/or nanosleep.
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AC_SEARCH_LIBS([sched_yield], [rt])
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AC_SEARCH_LIBS([nanosleep], [rt])
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dnl On GNU/Linux we need to link the runtime package against -lrt.
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dnl This is a target test, unlike sched_yield/nanosleep above
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dnl which is a host test.
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RT_LIBS=
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case ${target} in
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*-*-linux*) RT_LIBS=-lrt ;;
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esac
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AC_SUBST(RT_LIBS)
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AC_CONFIG_FILES(Makefile)
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AC_OUTPUT
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@ -832,8 +832,7 @@ libgo_ldflags = \
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libgo_libadd = \
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$(libgo_go_objs) ../libbacktrace/libbacktrace.la \
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$(LIBATOMIC) $(LIBFFI) $(PTHREAD_LIBS) $(MATH_LIBS) \
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$(NET_LIBS) $(RT_LIBS)
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$(LIBATOMIC) $(LIBFFI) $(PTHREAD_LIBS) $(MATH_LIBS) $(NET_LIBS)
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libgo_la_SOURCES = $(runtime_files)
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libgo_la_LDFLAGS = $(libgo_ldflags)
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@ -924,7 +923,7 @@ GOBENCH =
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CHECK = \
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GC="$(GOC) $(GOCFLAGS) $($(subst /,_,$@)_GOCFLAGS) -L `${PWD_COMMAND}` -L `${PWD_COMMAND}`/.libs"; \
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export GC; \
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GOLIBS="$(extra_check_libs_$(subst .,_,$(subst /,_,$(@D)))) $(PTHREAD_LIBS) $(MATH_LIBS) $(NET_LIBS) $(RT_LIBS) $(LIBS)"; \
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GOLIBS="$(extra_check_libs_$(subst .,_,$(subst /,_,$(@D)))) $(PTHREAD_LIBS) $(MATH_LIBS) $(NET_LIBS) $(LIBS)"; \
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export GOLIBS; \
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RUNTESTFLAGS="$(RUNTESTFLAGS)"; \
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export RUNTESTFLAGS; \
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@ -233,8 +233,7 @@ am__DEPENDENCIES_4 =
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am__DEPENDENCIES_5 = $(am__DEPENDENCIES_3) \
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../libbacktrace/libbacktrace.la $(am__DEPENDENCIES_4) \
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$(am__DEPENDENCIES_4) $(am__DEPENDENCIES_4) \
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$(am__DEPENDENCIES_4) $(am__DEPENDENCIES_4) \
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$(am__DEPENDENCIES_4)
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$(am__DEPENDENCIES_4) $(am__DEPENDENCIES_4)
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libgo_llgo_la_DEPENDENCIES = $(am__DEPENDENCIES_5)
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@LIBGO_IS_LINUX_TRUE@@LIBGO_IS_X86_TRUE@am__objects_1 = \
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@LIBGO_IS_LINUX_TRUE@@LIBGO_IS_X86_TRUE@ runtime/go-context.lo
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|
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@ -466,7 +465,6 @@ PATH_SEPARATOR = @PATH_SEPARATOR@
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PTHREAD_CFLAGS = @PTHREAD_CFLAGS@
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PTHREAD_LIBS = @PTHREAD_LIBS@
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RANLIB = @RANLIB@
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RT_LIBS = @RT_LIBS@
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SED = @SED@
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SET_MAKE = @SET_MAKE@
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SHELL = @SHELL@
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|
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@ -972,8 +970,7 @@ libgo_ldflags = \
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libgo_libadd = \
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$(libgo_go_objs) ../libbacktrace/libbacktrace.la \
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$(LIBATOMIC) $(LIBFFI) $(PTHREAD_LIBS) $(MATH_LIBS) \
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$(NET_LIBS) $(RT_LIBS)
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$(LIBATOMIC) $(LIBFFI) $(PTHREAD_LIBS) $(MATH_LIBS) $(NET_LIBS)
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|
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libgo_la_SOURCES = $(runtime_files)
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libgo_la_LDFLAGS = $(libgo_ldflags)
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|
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@ -1047,7 +1044,7 @@ GOBENCH =
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CHECK = \
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GC="$(GOC) $(GOCFLAGS) $($(subst /,_,$@)_GOCFLAGS) -L `${PWD_COMMAND}` -L `${PWD_COMMAND}`/.libs"; \
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export GC; \
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GOLIBS="$(extra_check_libs_$(subst .,_,$(subst /,_,$(@D)))) $(PTHREAD_LIBS) $(MATH_LIBS) $(NET_LIBS) $(RT_LIBS) $(LIBS)"; \
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GOLIBS="$(extra_check_libs_$(subst .,_,$(subst /,_,$(@D)))) $(PTHREAD_LIBS) $(MATH_LIBS) $(NET_LIBS) $(LIBS)"; \
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export GOLIBS; \
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RUNTESTFLAGS="$(RUNTESTFLAGS)"; \
|
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export RUNTESTFLAGS; \
|
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|
|
|
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|
|
@ -649,7 +649,6 @@ HAVE_SYS_MMAN_H_FALSE
|
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HAVE_SYS_MMAN_H_TRUE
|
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PTHREAD_LIBS
|
||||
PTHREAD_CFLAGS
|
||||
RT_LIBS
|
||||
NET_LIBS
|
||||
MATH_LIBS
|
||||
GOC_IS_LLGO_FALSE
|
||||
|
|
@ -11545,7 +11544,7 @@ else
|
|||
lt_dlunknown=0; lt_dlno_uscore=1; lt_dlneed_uscore=2
|
||||
lt_status=$lt_dlunknown
|
||||
cat > conftest.$ac_ext <<_LT_EOF
|
||||
#line 11548 "configure"
|
||||
#line 11547 "configure"
|
||||
#include "confdefs.h"
|
||||
|
||||
#if HAVE_DLFCN_H
|
||||
|
|
@ -11651,7 +11650,7 @@ else
|
|||
lt_dlunknown=0; lt_dlno_uscore=1; lt_dlneed_uscore=2
|
||||
lt_status=$lt_dlunknown
|
||||
cat > conftest.$ac_ext <<_LT_EOF
|
||||
#line 11654 "configure"
|
||||
#line 11653 "configure"
|
||||
#include "confdefs.h"
|
||||
|
||||
#if HAVE_DLFCN_H
|
||||
|
|
@ -14748,12 +14747,6 @@ $as_echo "$libgo_cv_lib_sockets" >&6; }
|
|||
NET_LIBS="$libgo_cv_lib_sockets"
|
||||
|
||||
|
||||
RT_LIBS=
|
||||
case ${host} in
|
||||
*-*-linux*) RT_LIBS=-lrt ;;
|
||||
esac
|
||||
|
||||
|
||||
{ $as_echo "$as_me:${as_lineno-$LINENO}: checking whether -pthread is supported" >&5
|
||||
$as_echo_n "checking whether -pthread is supported... " >&6; }
|
||||
if ${libgo_cv_lib_pthread+:} false; then :
|
||||
|
|
|
|||
|
|
@ -549,12 +549,6 @@ AC_CACHE_CHECK([for socket libraries], libgo_cv_lib_sockets,
|
|||
NET_LIBS="$libgo_cv_lib_sockets"
|
||||
AC_SUBST(NET_LIBS)
|
||||
|
||||
RT_LIBS=
|
||||
case ${host} in
|
||||
*-*-linux*) RT_LIBS=-lrt ;;
|
||||
esac
|
||||
AC_SUBST(RT_LIBS)
|
||||
|
||||
dnl Test whether the compiler supports the -pthread option.
|
||||
AC_CACHE_CHECK([whether -pthread is supported],
|
||||
[libgo_cv_lib_pthread],
|
||||
|
|
|
|||
|
|
@ -18,7 +18,7 @@ type mOS struct {
|
|||
// creates and manages its own timer, and these fields are read and written
|
||||
// only by this thread. But because some of the reads on profileTimerValid
|
||||
// are in signal handling code, access to that field uses atomic operations.
|
||||
profileTimer uintptr
|
||||
profileTimer int32
|
||||
profileTimerValid uint32
|
||||
}
|
||||
|
||||
|
|
@ -243,16 +243,17 @@ func osinit() {
|
|||
physHugePageSize = getHugePageSize()
|
||||
}
|
||||
|
||||
//go:noescape
|
||||
//extern-sysinfo timer_create
|
||||
func timer_create(clockid int32, sevp *_sigevent, timerid *uintptr) int32
|
||||
func timer_create(clockid int32, sevp *_sigevent, timerid *int32) int32 {
|
||||
return int32(syscall(_SYS_timer_create, uintptr(clockid), uintptr(unsafe.Pointer(sevp)), uintptr(unsafe.Pointer(timerid)), 0, 0, 0))
|
||||
}
|
||||
|
||||
//go:noescape
|
||||
//extern-sysinfo timer_settime
|
||||
func timer_settime(timerid uintptr, flags int32, new, old *_itimerspec) int32
|
||||
func timer_settime(timerid int32, flags int32, new, old *_itimerspec) int32 {
|
||||
return int32(syscall(_SYS_timer_settime, uintptr(timerid), uintptr(flags), uintptr(unsafe.Pointer(new)), uintptr(unsafe.Pointer(old)), 0, 0))
|
||||
}
|
||||
|
||||
//extern-sysinfo timer_delete
|
||||
func timer_delete(timerid uintptr) int32
|
||||
func timer_delete(timerid int32) int32 {
|
||||
return int32(syscall(_SYS_timer_delete, uintptr(timerid), 0, 0, 0, 0, 0))
|
||||
}
|
||||
|
||||
// go118UseTimerCreateProfiler enables the per-thread CPU profiler.
|
||||
const go118UseTimerCreateProfiler = true
|
||||
|
|
@ -360,7 +361,7 @@ func setThreadCPUProfiler(hz int32) {
|
|||
spec.it_value.setNsec(1 + int64(fastrandn(uint32(1e9/hz))))
|
||||
spec.it_interval.setNsec(1e9 / int64(hz))
|
||||
|
||||
var timerid uintptr
|
||||
var timerid int32
|
||||
var sevp _sigevent
|
||||
sevp.sigev_notify = _SIGEV_THREAD_ID
|
||||
sevp.sigev_signo = _SIGPROF
|
||||
|
|
|
|||
|
|
@ -215,7 +215,6 @@ PATH_SEPARATOR = @PATH_SEPARATOR@
|
|||
PTHREAD_CFLAGS = @PTHREAD_CFLAGS@
|
||||
PTHREAD_LIBS = @PTHREAD_LIBS@
|
||||
RANLIB = @RANLIB@
|
||||
RT_LIBS = @RT_LIBS@
|
||||
SED = @SED@
|
||||
SET_MAKE = @SET_MAKE@
|
||||
SHELL = @SHELL@
|
||||
|
|
|
|||
Loading…
Reference in New Issue