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* Makefile.in (DLL_OFILES): Add sigfe.o. Remove reliance on cygwin.def from cygwin0.dll dependency since dependence on sigfe.o implies that. Generate def file on the fly using 'gendef'. * configure.in: Don't auto-generate cygwin.def. * configure: Regenerate. * cygwin.din: Add SIGFE stuff where appropriate. * dcrt0.cc (dll_crt0_1): Initialize cygwin tls early in process startup. Set _main_tls to address of the main thread's cygwin tls. * debug.h: Remove now unneeded WFSO and WFMO declarations. * exceptions.cc (_last_thread): Define. (set_thread_state_for_signals): New function. (reset_thread_exception_for_signals): Ditto. (init_thread_for_signals): Ditto. (delete_thread_for_signals): Ditto. (capture_thread_for_signals): Ditto. (handle_exceptions): Set return address explicitly for exceptions prior to calling sig_send. (interrupt_on_return): Eliminate. (setup_handler): Add preliminary implementation for dealing with thread-specific signals by querying _main_tls. (signal_exit): Use cygthread::main_thread_id instead of mainthread.id. (call_signal_handler_now): For now, just handle the main thread. * fork.cc (vfork): Save and restore main _my_tls. * gendef: New file. Generates def file and sigfe.s file. * gentls_offsets: New file. Generates offsets for perl to use in sigfe.s. * how-signals-work.txt: Mention that info is obsolete. * init.cc (dll_entry): Initialize cygwin tls storage here. * miscfuncs.cc (low_priority_sleep): Make a C function for easier calling from asm. * perthread.h (vfork_save::tls): New element. * signal.cc (nanosleep): Replace previous use of sigframe.call_signal_handler_now with straight call to call_signal_handler_now. (abort): Ditto. * syscalls.cc (readv): Ditto. * termios.cc (tcsetattr): Ditto. * wait.cc (wait4): Ditto. * sigproc.cc (sig_dispatch_pending): Ditto. (sig_send): Ditto. * sigproc.h: Declare call_signal_handler_now. * thread.cc (pthread::thread_init_wrapper): Initialize cygwin tls. Remove obsolete and unworking signal stuff. * thread.h (verifyable_object::sigs): Eliminate. (verifyable_object::sigmask): Eliminate. (verifyable_object::sigtodo): Eliminate. (verifyable_object::exit): Make attribute noreturn. (verifyable_object::thread_init_wrapper): Ditto. (pthread_null::exit): Ditto. * winbase.h (__stackbase): Always define. * winsup.h (low_priority_sleep): Declare as a "C" function. * include/cygwin/version.h: Bump API version to reflect sigwait export. * include/sys/queue.h: Protect SLIST_ENTRY from previous declaration. * signal.cc (sigwait): Implement. * select.cc (fhandler_base::ready_for_read): Add debugging output. * devices.h: Define more device pointers via their storage. * devices.in: Don't parse things like /dev/inet/tcp, as they really have no meaning. * devices.cc: Regenerate. * gendevices: Set proper protection for output file. * cygtls.h: New file. * gendef: New file. * gentls_offsets: New file. * tlsoffsets.h: New file. Autogenerated. * config/i386/longjmp.c: Remove. File subsumed by gendef output. * config/i386/makefrag: Remove obsolete file. * fhandler.cc: Remove spurious access_worker declaration. * spawn.cc (spawnve): Make debugging output more accurate. * cygwin-gperf: Remove. * devices.cc: Remove.
93 lines
2.1 KiB
C++
93 lines
2.1 KiB
C++
/* perthread.h: Header file for cygwin thread-local storage.
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Copyright 2000, 2001, 2002 Red Hat, Inc.
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Written by Christopher Faylor <cgf@cygnus.com>
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This file is part of Cygwin.
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This software is a copyrighted work licensed under the terms of the
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Cygwin license. Please consult the file "CYGWIN_LICENSE" for
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details. */
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#define PTMAGIC 0x77366377
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struct _reent;
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extern struct _reent reent_data;
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#define PER_THREAD_FORK_CLEAR ((void *)0xffffffff)
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class per_thread
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{
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DWORD tls;
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int clear_on_fork_p;
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public:
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per_thread (int forkval = 1) {tls = TlsAlloc (); clear_on_fork_p = forkval;}
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DWORD get_tls () {return tls;}
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int clear_on_fork () {return clear_on_fork_p;}
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virtual void *get () {return TlsGetValue (get_tls ());}
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virtual size_t size () {return 0;}
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virtual void set (void *s = NULL);
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virtual void set (int n) {TlsSetValue (get_tls (), (void *)n);}
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virtual void *create ()
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{
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void *s = new char [size ()];
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memset (s, 0, size ());
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set (s);
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return s;
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}
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};
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class per_thread_waitq : public per_thread
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{
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public:
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per_thread_waitq () : per_thread (0) {}
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void *get () {return (waitq *) per_thread::get ();}
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void *create () {return (waitq *) per_thread::create ();}
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size_t size () {return sizeof (waitq);}
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};
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#if defined (NEED_VFORK)
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#include "cygtls.h"
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class vfork_save
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{
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jmp_buf j;
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int exitval;
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public:
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int pid;
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DWORD frame[100];
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_threadinfo tls;
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char **vfork_ebp;
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char **vfork_esp;
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int ctty;
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pid_t sid;
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pid_t pgid;
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int is_active () { return pid < 0; }
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void restore_pid (int val)
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{
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pid = val;
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longjmp (j, 1);
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}
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void restore_exit (int val)
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{
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exitval = val;
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longjmp (j, 1);
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}
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friend int vfork ();
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};
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class per_thread_vfork : public per_thread
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{
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public:
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vfork_save *val () { return (vfork_save *) per_thread::get (); }
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vfork_save *create () {return (vfork_save *) per_thread::create ();}
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size_t size () {return sizeof (vfork_save);}
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};
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extern per_thread_vfork vfork_storage;
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extern vfork_save *main_vfork;
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#endif
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extern per_thread_waitq waitq_storage;
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extern per_thread *threadstuff[];
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