126 lines
2.5 KiB
C++
126 lines
2.5 KiB
C++
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/* cygtls.h
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Copyright 2003 Red Hat, Inc.
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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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#include "winsup.h"
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#include "thread.h"
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#include "cygtls.h"
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#include "assert.h"
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#include <syslog.h>
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static _threadinfo NO_COPY dummy_thread;
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_threadinfo NO_COPY *_last_thread = &dummy_thread;
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CRITICAL_SECTION NO_COPY _threadinfo::protect_linked_list;
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void
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_threadinfo::set_state (bool is_exception)
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{
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initialized = CYGTLS_INITIALIZED + is_exception;
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}
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void
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_threadinfo::reset_exception ()
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{
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if (initialized == CYGTLS_EXCEPTION)
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{
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#ifdef DEBUGGING
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debug_printf ("resetting stack after an exception stack %p, stackptr %p", stack, stackptr);
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#endif
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set_state (false);
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stackptr--;
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}
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}
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/* Two calls to get the stack right... */
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void
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_threadinfo::call (DWORD (*func) (void *, void *), void *arg)
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{
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char buf[CYGTLS_PADSIZE];
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call2 (func, arg, buf);
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}
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void
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_threadinfo::call2 (DWORD (*func) (void *, void *), void *arg, void *buf)
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{
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_my_tls.init_thread (buf);
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ExitThread (func (arg, buf));
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}
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void
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_threadinfo::init ()
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{
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InitializeCriticalSection (&protect_linked_list);
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}
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void
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_threadinfo::init_thread (void *x)
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{
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if (x)
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{
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memset (this, 0, sizeof (*this));
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stackptr = stack;
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if (_GLOBAL_REENT)
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{
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local_clib._stdin = _GLOBAL_REENT->_stdin;
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local_clib._stdout = _GLOBAL_REENT->_stdout;
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local_clib._stderr = _GLOBAL_REENT->_stderr;
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local_clib.__sdidinit = _GLOBAL_REENT->__sdidinit;
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local_clib.__cleanup = _GLOBAL_REENT->__cleanup;
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}
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local_clib._current_locale = "C";
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locals.process_logmask = LOG_UPTO (LOG_DEBUG);
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}
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EnterCriticalSection (&protect_linked_list);
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prev = _last_thread;
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_last_thread->next = this;
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_last_thread = this;
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LeaveCriticalSection (&protect_linked_list);
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set_state (false);
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errno_addr = &(local_clib._errno);
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}
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void
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_threadinfo::remove ()
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{
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EnterCriticalSection (&protect_linked_list);
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if (prev)
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{
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prev->next = next;
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if (next)
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next->prev = prev;
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if (this == _last_thread)
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_last_thread = prev;
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prev = next = NULL;
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}
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LeaveCriticalSection (&protect_linked_list);
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}
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void
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_threadinfo::push (__stack_t addr, bool exception)
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{
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*stackptr++ = (__stack_t) addr;
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set_state (exception);
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}
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__stack_t
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_threadinfo::pop ()
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{
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#ifdef DEBUGGING
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assert (stackptr > stack);
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#endif
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__stack_t res = *--stackptr;
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#ifdef DEBUGGING
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*stackptr = 0;
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debug_printf ("popped %p, stack %p, stackptr %p", res, stack, stackptr);
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#endif
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return res;
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}
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