Date: Sat, 25 Sep 1999 10:40:45 -0700 (PDT) From: John Polstra <jdp@polstra.com> To: Mikhail Teterin <mi@aldan.algebra.com> Cc: java-discuss@sourceware.cygnus.com, obrien@FreeBSD.org, java@FreeBSD.org, jb@cimlogic.com.au, eischen@vigrid.com Subject: RE: porting libjava to FreeBSD Message-ID: <XFMail.990925104045.jdp@polstra.com> In-Reply-To: <199909251726.NAA44892@rtfm.newton>
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Mikhail Teterin wrote: > > However, the low level code in libgcj-2.95.1/boehm-gc/linux_threads.c > uses the non-existent (on FreeBSD) signal SIGPWR. With the following > comment: > > /* > * The only way to suspend threads given the pthread > * interface is to send signals. We can't use SIGSTOP > * directly, because we need to get the thread to save > * its stack pointer in the GC thread table before > * suspending. So we have to reserve a signal of our own > * for this. This means we have to intercept client > * calls to change the signal mask. The linuxthreads > * package already uses SIGUSR1 and SIGUSR2, so we need > * to reuse something else. I chose SIGPWR. (Perhaps > * SIGUNUSED would be a better choice.) > */ > #define SIG_SUSPEND SIGPWR Ick. I think it would be better to suspend threads using pthread_suspend_np(). John To Unsubscribe: send mail to majordomo@FreeBSD.org with "unsubscribe freebsd-java" in the body of the message
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