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Eliminate use of sigframe and sigthread throughout.

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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* how-signals-work.txt: Mention that info is obsolete.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.
This commit is contained in:
Christopher Faylor
2003-11-28 20:55:59 +00:00
parent ffe0063843
commit 9a4d574b8d
50 changed files with 3311 additions and 3466 deletions
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26
winsup/cygwin/mmap.cc
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@@ -39,9 +39,9 @@ static fhandler_disk_file fh_paging_file;
for duplicating all mmaps after fork() since mmaps are not propagated
to child processes by Windows. All information must be duplicated
by hand, see fixup_mmaps_after_fork().
The class structure:
One member of class map per process, global variable mmapped_areas.
Contains a dynamic class list array. Each list entry represents all
mapping to a file, keyed by file descriptor and file name hash.
@@ -318,13 +318,13 @@ list::add_record (mmap_record r, _off64_t off, DWORD len)
{
mmap_record *new_recs;
if (maxrecs == 0)
new_recs = (mmap_record *)
new_recs = (mmap_record *)
cmalloc (HEAP_MMAP, 5 * sizeof (mmap_record));
else
new_recs = (mmap_record *)
crealloc (recs, (maxrecs + 5) * sizeof (mmap_record));
if (!new_recs)
return NULL;
return NULL;
maxrecs += 5;
recs = new_recs;
}
@@ -425,11 +425,11 @@ map::add_list (int fd)
{
list *new_lists;
if (maxlists == 0)
new_lists = (list *) cmalloc (HEAP_MMAP, 5 * sizeof (list));
new_lists = (list *) cmalloc (HEAP_MMAP, 5 * sizeof (list));
else
new_lists = (list *) crealloc (lists, (maxlists + 5) * sizeof (list));
if (!new_lists)
return NULL;
return NULL;
maxlists += 5;
lists = new_lists;
}
@@ -444,7 +444,7 @@ map::del_list (int i)
{
lists[i].free_recs ();
for (; i < nlists - 1; i++)
lists[i] = lists[i + 1];
lists[i] = lists[i + 1];
nlists--;
}
}
@@ -668,16 +668,16 @@ munmap (void *addr, size_t len)
DWORD u_len;
while ((record_idx = map_list->search_record((caddr_t)addr, len, u_addr,
u_len, record_idx)) >= 0)
u_len, record_idx)) >= 0)
{
mmap_record *rec = map_list->get_record (record_idx);
if (rec->unmap_pages (u_addr, u_len))
{
/* The whole record has been unmapped, so we now actually
unmap it from the system in full length... */
unmap it from the system in full length... */
fhandler_base *fh = rec->alloc_fh ();
fh->munmap (rec->get_handle (),
rec->get_address (),
rec->get_address (),
rec->get_size ());
rec->free_fh (fh);
@@ -735,7 +735,7 @@ msync (void *addr, size_t len, int flags)
{
mmap_record *rec;
for (int record_idx = 0;
(rec = map_list->get_record (record_idx));
(rec = map_list->get_record (record_idx));
++record_idx)
{
if (rec->access ((caddr_t)addr))
@@ -746,7 +746,7 @@ msync (void *addr, size_t len, int flags)
goto invalid_address_range;
fhandler_base *fh = rec->alloc_fh ();
int ret = fh->msync (rec->get_handle (), (caddr_t)addr, len,
flags);
flags);
rec->free_fh (fh);
if (ret)
@@ -1012,7 +1012,7 @@ fixup_mmaps_after_fork (HANDLE parent)
{
mmap_record *rec;
for (int record_idx = 0;
(rec = map_list->get_record (record_idx));
(rec = map_list->get_record (record_idx));
++record_idx)
{