Date: Wed, 29 Apr 1998 02:59:46 -0700 (PDT) From: John Birrell <jb@FreeBSD.ORG> To: cvs-committers@FreeBSD.ORG, cvs-all@FreeBSD.ORG, cvs-lib@FreeBSD.ORG Subject: cvs commit: src/lib/libc_r/uthread uthread_find_thread.c uthread_spinlock.c Makefile.inc pthread_private.h uthread_accept.c uthread_bind.c uthread_close.c uthread_cond.c uthread_connect.c uthread_create.c uthread_detach.c uthread_dup.c uthread_dup2.c uthread_execve.c ... Message-ID: <199804290959.CAA23081@freefall.freebsd.org>
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jb 1998/04/29 02:59:45 PDT Modified files: lib/libc_r/uthread Makefile.inc pthread_private.h uthread_accept.c uthread_bind.c uthread_close.c uthread_cond.c uthread_connect.c uthread_create.c uthread_detach.c uthread_dup.c uthread_dup2.c uthread_execve.c uthread_exit.c uthread_fchmod.c uthread_fchown.c uthread_fcntl.c uthread_fd.c uthread_file.c uthread_flock.c uthread_fork.c uthread_fstat.c uthread_fstatfs.c uthread_fsync.c uthread_getdirentries.c uthread_getpeername.c uthread_getprio.c uthread_getsockname.c uthread_getsockopt.c uthread_info.c uthread_init.c uthread_ioctl.c uthread_join.c uthread_kern.c uthread_kill.c uthread_listen.c uthread_mutex.c uthread_nanosleep.c uthread_open.c uthread_pipe.c uthread_read.c uthread_readv.c uthread_recvfrom.c uthread_resume_np.c uthread_select.c uthread_sendto.c uthread_seterrno.c uthread_setprio.c uthread_setsockopt.c uthread_shutdown.c uthread_sig.c uthread_sigaction.c uthread_sigblock.c uthread_sigmask.c uthread_sigprocmask.c uthread_sigsetmask.c uthread_sigsuspend.c uthread_sigwait.c uthread_socket.c uthread_socketpair.c uthread_spec.c uthread_suspend_np.c uthread_wait4.c uthread_write.c uthread_writev.c Added files: lib/libc_r/uthread uthread_find_thread.c uthread_spinlock.c Log: Change signal model to match POSIX (i.e. one set of signal handlers for the process, not a separate set for each thread). By default, the process now only has signal handlers installed for SIGVTALRM, SIGINFO and SIGCHLD. The thread kernel signal handler is installed for other signals on demand. This means that SIG_IGN and SIG_DFL processing is now left to the kernel, not the thread kernel. Change the signal dispatch to no longer use a signal thread, and call the signal handler using the stack of the thread that has the signal pending. Change the atomic lock method to use test-and-set asm code with a yield if blocked. This introduces separate locks for each type of object instead of blocking signals to prevent a context switch. It was this blocking of signals that caused the performance degradation the people have noted. This is a *big* change! Revision Changes Path 1.11 +4 -5 src/lib/libc_r/uthread/Makefile.inc 1.10 +51 -32 src/lib/libc_r/uthread/pthread_private.h 1.6 +6 -4 src/lib/libc_r/uthread/uthread_accept.c 1.2 +1 -1 src/lib/libc_r/uthread/uthread_bind.c 1.3 +1 -8 src/lib/libc_r/uthread/uthread_close.c 1.9 +68 -65 src/lib/libc_r/uthread/uthread_cond.c 1.2 +1 -1 src/lib/libc_r/uthread/uthread_connect.c 1.9 +27 -122 src/lib/libc_r/uthread/uthread_create.c 1.6 +3 -10 src/lib/libc_r/uthread/uthread_detach.c 1.2 +32 -0 src/lib/libc_r/uthread/uthread_dup.c 1.2 +1 -1 src/lib/libc_r/uthread/uthread_dup2.c 1.3 +5 -8 src/lib/libc_r/uthread/uthread_execve.c 1.4 +11 -35 src/lib/libc_r/uthread/uthread_exit.c 1.2 +1 -1 src/lib/libc_r/uthread/uthread_fchmod.c 1.2 +1 -1 src/lib/libc_r/uthread/uthread_fchown.c 1.3 +2 -7 src/lib/libc_r/uthread/uthread_fcntl.c 1.6 +53 -36 src/lib/libc_r/uthread/uthread_fd.c 1.3 +25 -18 src/lib/libc_r/uthread/uthread_file.c 1.2 +1 -1 src/lib/libc_r/uthread/uthread_flock.c 1.5 +7 -7 src/lib/libc_r/uthread/uthread_fork.c 1.2 +1 -1 src/lib/libc_r/uthread/uthread_fstat.c 1.2 +1 -1 src/lib/libc_r/uthread/uthread_fstatfs.c 1.2 +1 -1 src/lib/libc_r/uthread/uthread_fsync.c 1.2 +1 -1 src/lib/libc_r/uthread/uthread_getdirentries.c 1.2 +1 -1 src/lib/libc_r/uthread/uthread_getpeername.c 1.3 +9 -26 src/lib/libc_r/uthread/uthread_getprio.c 1.2 +1 -1 src/lib/libc_r/uthread/uthread_getsockname.c 1.2 +1 -1 src/lib/libc_r/uthread/uthread_getsockopt.c 1.5 +1 -1 src/lib/libc_r/uthread/uthread_info.c 1.7 +22 -33 src/lib/libc_r/uthread/uthread_init.c 1.3 +4 -10 src/lib/libc_r/uthread/uthread_ioctl.c 1.5 +23 -49 src/lib/libc_r/uthread/uthread_join.c 1.10 +35 -435 src/lib/libc_r/uthread/uthread_kern.c 1.2 +7 -28 src/lib/libc_r/uthread/uthread_kill.c 1.2 +1 -1 src/lib/libc_r/uthread/uthread_listen.c 1.6 +47 -65 src/lib/libc_r/uthread/uthread_mutex.c 1.6 +3 -2 src/lib/libc_r/uthread/uthread_nanosleep.c 1.4 +2 -8 src/lib/libc_r/uthread/uthread_open.c 1.3 +1 -1 src/lib/libc_r/uthread/uthread_pipe.c 1.4 +3 -4 src/lib/libc_r/uthread/uthread_read.c 1.4 +3 -4 src/lib/libc_r/uthread/uthread_readv.c 1.2 +4 -2 src/lib/libc_r/uthread/uthread_recvfrom.c 1.3 +9 -25 src/lib/libc_r/uthread/uthread_resume_np.c 1.3 +7 -2 src/lib/libc_r/uthread/uthread_select.c 1.2 +9 -1 src/lib/libc_r/uthread/uthread_sendto.c 1.2 +2 -3 src/lib/libc_r/uthread/uthread_seterrno.c 1.3 +8 -32 src/lib/libc_r/uthread/uthread_setprio.c 1.2 +1 -1 src/lib/libc_r/uthread/uthread_setsockopt.c 1.3 +1 -1 src/lib/libc_r/uthread/uthread_shutdown.c 1.4 +226 -71 src/lib/libc_r/uthread/uthread_sig.c 1.3 +37 -15 src/lib/libc_r/uthread/uthread_sigaction.c 1.2 +1 -1 src/lib/libc_r/uthread/uthread_sigblock.c 1.2 +5 -8 src/lib/libc_r/uthread/uthread_sigmask.c 1.3 +4 -8 src/lib/libc_r/uthread/uthread_sigprocmask.c 1.2 +1 -1 src/lib/libc_r/uthread/uthread_sigsetmask.c 1.4 +3 -0 src/lib/libc_r/uthread/uthread_sigsuspend.c 1.2 +0 -9 src/lib/libc_r/uthread/uthread_sigwait.c 1.3 +1 -1 src/lib/libc_r/uthread/uthread_socket.c 1.4 +2 -2 src/lib/libc_r/uthread/uthread_socketpair.c 1.6 +44 -66 src/lib/libc_r/uthread/uthread_spec.c 1.3 +15 -23 src/lib/libc_r/uthread/uthread_suspend_np.c 1.2 +6 -6 src/lib/libc_r/uthread/uthread_wait4.c 1.5 +3 -4 src/lib/libc_r/uthread/uthread_write.c 1.5 +3 -4 src/lib/libc_r/uthread/uthread_writev.c To Unsubscribe: send mail to majordomo@FreeBSD.org with "unsubscribe cvs-all" in the body of the message
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