qemu: mutex/thread/cond wrappers and configure tweaks (Marcelo Tosatti)
Signed-off-by: Marcelo Tosatti <mtosatti@redhat.com> Signed-off-by: Anthony Liguori <aliguori@us.ibm.com> git-svn-id: svn://svn.savannah.nongnu.org/qemu/trunk@7237 c046a42c-6fe2-441c-8c8c-71466251a162
This commit is contained in:
aliguori
parent
d9f75a4eb4
commit
e5d355d12e
7
Makefile
7
Makefile
@ -30,7 +30,8 @@ else
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DOCS=
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endif
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LIBS+=$(AIOLIBS)
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LIBS+=$(PTHREADLIBS)
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LIBS+=$(CLOCKLIBS)
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ifdef CONFIG_SOLARIS
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LIBS+=-lsocket -lnsl -lresolv
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@ -170,6 +171,10 @@ ifdef CONFIG_COCOA
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OBJS+=cocoa.o
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endif
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ifdef CONFIG_IOTHREAD
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OBJS+=qemu-thread.o
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endif
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ifdef CONFIG_SLIRP
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CPPFLAGS+=-I$(SRC_PATH)/slirp
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SLIRP_OBJS=cksum.o if.o ip_icmp.o ip_input.o ip_output.o \
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@ -318,7 +318,8 @@ endif
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OBJS= main.o syscall.o strace.o mmap.o signal.o path.o thunk.o \
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elfload.o linuxload.o uaccess.o envlist.o
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LIBS+= $(AIOLIBS)
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LIBS+= $(PTHREADLIBS)
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LIBS+= $(CLOCKLIBS)
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ifdef TARGET_HAS_BFLT
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OBJS+= flatload.o
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endif
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@ -694,7 +695,8 @@ ifdef CONFIG_SLIRP
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CPPFLAGS+=-I$(SRC_PATH)/slirp
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endif
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LIBS+=$(AIOLIBS)
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LIBS+=$(PTHREADLIBS)
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LIBS+=$(CLOCKLIBS)
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# specific flags are needed for non soft mmu emulator
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ifdef CONFIG_STATIC
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LDFLAGS+=-static
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41
configure
vendored
41
configure
vendored
@ -181,7 +181,9 @@ bsd_user="no"
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build_docs="no"
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uname_release=""
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curses="yes"
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pthread="yes"
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aio="yes"
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io_thread="no"
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nptl="yes"
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mixemu="no"
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bluez="yes"
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@ -479,8 +481,12 @@ for opt do
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;;
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--enable-mixemu) mixemu="yes"
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;;
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--disable-pthread) pthread="no"
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;;
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--disable-aio) aio="no"
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;;
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--enable-io-thread) io_thread="yes"
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;;
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--disable-blobs) blobs="no"
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;;
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--kerneldir=*) kerneldir="$optarg"
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@ -611,7 +617,9 @@ echo " --oss-lib path to OSS library"
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echo " --enable-uname-release=R Return R for uname -r in usermode emulation"
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echo " --sparc_cpu=V Build qemu for Sparc architecture v7, v8, v8plus, v8plusa, v9"
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echo " --disable-vde disable support for vde network"
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echo " --disable-pthread disable pthread support"
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echo " --disable-aio disable AIO support"
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echo " --enable-io-thread enable IO thread"
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echo " --disable-blobs disable installing provided firmware blobs"
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echo " --kerneldir=PATH look for kernel includes in PATH"
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echo ""
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@ -1123,21 +1131,26 @@ EOF
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fi
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##########################################
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# AIO probe
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AIOLIBS=""
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# pthread probe
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PTHREADLIBS=""
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if test "$aio" = "yes" ; then
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aio=no
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cat > $TMPC << EOF
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if test "$pthread" = yes; then
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pthread=no
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cat > $TMPC << EOF
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#include <pthread.h>
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int main(void) { pthread_mutex_t lock; return 0; }
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EOF
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if $cc $ARCH_CFLAGS -o $TMPE $AIOLIBS $TMPC 2> /dev/null ; then
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aio=yes
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AIOLIBS="-lpthread"
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if $cc $ARCH_CFLAGS -o $TMPE $PTHREADLIBS $TMPC 2> /dev/null ; then
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pthread=yes
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PTHREADLIBS="-lpthread"
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fi
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fi
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if test "$pthread" = no; then
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aio=no
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io_thread=no
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fi
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##########################################
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# iovec probe
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cat > $TMPC <<EOF
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@ -1231,6 +1244,7 @@ fi
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##########################################
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# Do we need librt
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CLOCKLIBS=""
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cat > $TMPC <<EOF
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#include <signal.h>
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#include <time.h>
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@ -1245,8 +1259,7 @@ elif $cc $ARCH_CFLAGS -o $TMPE $TMPC -lrt > /dev/null 2> /dev/null ; then
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fi
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if test "$rt" = "yes" ; then
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# Hack, we should have a general purpose LIBS for this sort of thing
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AIOLIBS="$AIOLIBS -lrt"
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CLOCKLIBS="-lrt"
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fi
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if test "$mingw32" = "yes" ; then
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@ -1324,6 +1337,7 @@ echo "uname -r $uname_release"
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echo "NPTL support $nptl"
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echo "vde support $vde"
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echo "AIO support $aio"
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echo "IO thread $io_thread"
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echo "Install blobs $blobs"
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echo "KVM support $kvm"
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echo "fdt support $fdt"
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@ -1376,7 +1390,8 @@ echo "ARCH_LDFLAGS=$ARCH_LDFLAGS" >> $config_mak
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echo "CFLAGS=$CFLAGS" >> $config_mak
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echo "LDFLAGS=$LDFLAGS" >> $config_mak
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echo "EXESUF=$EXESUF" >> $config_mak
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echo "AIOLIBS=$AIOLIBS" >> $config_mak
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echo "PTHREADLIBS=$PTHREADLIBS" >> $config_mak
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echo "CLOCKLIBS=$CLOCKLIBS" >> $config_mak
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case "$cpu" in
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i386)
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echo "ARCH=i386" >> $config_mak
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@ -1640,6 +1655,10 @@ if test "$aio" = "yes" ; then
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echo "#define CONFIG_AIO 1" >> $config_h
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echo "CONFIG_AIO=yes" >> $config_mak
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fi
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if test "$io_thread" = "yes" ; then
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echo "CONFIG_IOTHREAD=yes" >> $config_mak
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echo "#define CONFIG_IOTHREAD 1" >> $config_h
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fi
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if test "$blobs" = "yes" ; then
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echo "INSTALL_BLOBS=yes" >> $config_mak
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fi
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163
qemu-thread.c
Normal file
163
qemu-thread.c
Normal file
@ -0,0 +1,163 @@
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/*
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* Wrappers around mutex/cond/thread functions
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*
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* Copyright Red Hat, Inc. 2009
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*
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* Author:
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* Marcelo Tosatti <mtosatti@redhat.com>
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*
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* This work is licensed under the terms of the GNU GPL, version 2 or later.
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* See the COPYING file in the top-level directory.
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*
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*/
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#include <stdlib.h>
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#include <stdio.h>
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#include <errno.h>
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#include <time.h>
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#include <signal.h>
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#include <stdint.h>
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#include <string.h>
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#include "qemu-thread.h"
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static void error_exit(int err, const char *msg)
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{
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fprintf(stderr, "qemu: %s: %s\n", msg, strerror(err));
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exit(1);
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}
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void qemu_mutex_init(QemuMutex *mutex)
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{
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int err;
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err = pthread_mutex_init(&mutex->lock, NULL);
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if (err)
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error_exit(err, __func__);
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}
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void qemu_mutex_lock(QemuMutex *mutex)
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{
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int err;
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err = pthread_mutex_lock(&mutex->lock);
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if (err)
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error_exit(err, __func__);
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}
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int qemu_mutex_trylock(QemuMutex *mutex)
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{
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return pthread_mutex_trylock(&mutex->lock);
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}
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static void timespec_add_ms(struct timespec *ts, uint64_t msecs)
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{
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ts->tv_sec = ts->tv_sec + (long)(msecs / 1000);
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ts->tv_nsec = (ts->tv_nsec + ((long)msecs % 1000) * 1000000);
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if (ts->tv_nsec >= 1000000000) {
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ts->tv_nsec -= 1000000000;
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ts->tv_sec++;
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}
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}
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int qemu_mutex_timedlock(QemuMutex *mutex, uint64_t msecs)
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{
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int err;
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struct timespec ts;
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clock_gettime(CLOCK_REALTIME, &ts);
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timespec_add_ms(&ts, msecs);
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err = pthread_mutex_timedlock(&mutex->lock, &ts);
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if (err && err != ETIMEDOUT)
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error_exit(err, __func__);
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return err;
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}
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void qemu_mutex_unlock(QemuMutex *mutex)
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{
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int err;
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err = pthread_mutex_unlock(&mutex->lock);
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if (err)
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error_exit(err, __func__);
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}
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void qemu_cond_init(QemuCond *cond)
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{
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int err;
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err = pthread_cond_init(&cond->cond, NULL);
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if (err)
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error_exit(err, __func__);
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}
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void qemu_cond_signal(QemuCond *cond)
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{
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int err;
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err = pthread_cond_signal(&cond->cond);
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if (err)
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error_exit(err, __func__);
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}
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void qemu_cond_broadcast(QemuCond *cond)
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{
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int err;
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err = pthread_cond_broadcast(&cond->cond);
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if (err)
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error_exit(err, __func__);
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}
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void qemu_cond_wait(QemuCond *cond, QemuMutex *mutex)
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{
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int err;
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err = pthread_cond_wait(&cond->cond, &mutex->lock);
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if (err)
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error_exit(err, __func__);
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}
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int qemu_cond_timedwait(QemuCond *cond, QemuMutex *mutex, uint64_t msecs)
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{
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struct timespec ts;
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int err;
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clock_gettime(CLOCK_REALTIME, &ts);
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timespec_add_ms(&ts, msecs);
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err = pthread_cond_timedwait(&cond->cond, &mutex->lock, &ts);
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if (err && err != ETIMEDOUT)
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error_exit(err, __func__);
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return err;
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}
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void qemu_thread_create(QemuThread *thread,
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void *(*start_routine)(void*),
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void *arg)
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{
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int err;
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err = pthread_create(&thread->thread, NULL, start_routine, arg);
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if (err)
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error_exit(err, __func__);
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}
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void qemu_thread_signal(QemuThread *thread, int sig)
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{
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int err;
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err = pthread_kill(thread->thread, sig);
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if (err)
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error_exit(err, __func__);
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}
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void qemu_thread_self(QemuThread *thread)
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{
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thread->thread = pthread_self();
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}
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int qemu_thread_equal(QemuThread *thread1, QemuThread *thread2)
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{
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return (thread1->thread == thread2->thread);
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}
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40
qemu-thread.h
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40
qemu-thread.h
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@ -0,0 +1,40 @@
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#ifndef __QEMU_THREAD_H
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#define __QEMU_THREAD_H 1
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#include "semaphore.h"
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#include "pthread.h"
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struct QemuMutex {
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pthread_mutex_t lock;
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};
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struct QemuCond {
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pthread_cond_t cond;
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};
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struct QemuThread {
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pthread_t thread;
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};
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typedef struct QemuMutex QemuMutex;
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typedef struct QemuCond QemuCond;
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typedef struct QemuThread QemuThread;
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void qemu_mutex_init(QemuMutex *mutex);
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void qemu_mutex_lock(QemuMutex *mutex);
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int qemu_mutex_trylock(QemuMutex *mutex);
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int qemu_mutex_timedlock(QemuMutex *mutex, uint64_t msecs);
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void qemu_mutex_unlock(QemuMutex *mutex);
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void qemu_cond_init(QemuCond *cond);
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void qemu_cond_signal(QemuCond *cond);
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void qemu_cond_broadcast(QemuCond *cond);
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void qemu_cond_wait(QemuCond *cond, QemuMutex *mutex);
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int qemu_cond_timedwait(QemuCond *cond, QemuMutex *mutex, uint64_t msecs);
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void qemu_thread_create(QemuThread *thread,
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void *(*start_routine)(void*),
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void *arg);
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void qemu_thread_signal(QemuThread *thread, int sig);
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void qemu_thread_self(QemuThread *thread);
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int qemu_thread_equal(QemuThread *thread1, QemuThread *thread2);
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#endif
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