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/* Copyright (c) 2008 PrimeBase Technologies GmbH, Germany
*
* PrimeBase Media Stream for MySQL
*
* This program is free software; you can redistribute it and/or modify
* it under the terms of the GNU General Public License as published by
* the Free Software Foundation; either version 2 of the License, or
* (at your option) any later version.
*
* This program is distributed in the hope that it will be useful,
* but WITHOUT ANY WARRANTY; without even the implied warranty of
* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
* GNU General Public License for more details.
*
* You should have received a copy of the GNU General Public License
* along with this program; if not, write to the Free Software
* Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA
*
* Original author: Paul McCullagh (H&G2JCtL)
* Continued development: Barry Leslie
*
* 2007-05-20
*
* CORE SYSTEM:
* The definitions are used by all code, and is NOT required
* by any header file!
*
*/
#ifndef __CSGLOBAL_H__
#define __CSGLOBAL_H__
#include "CSDefs.h"
#include "CSThread.h"
/* Those compilers that support the function
* macro (in particular the "pretty" function
* macro must be defined here.
*/
#ifdef OS_WINDOWS
#define __FUNC__ __FUNCTION__
#elif defined(OS_SOLARIS)
#define __FUNC__ "__func__"
#else
#define __FUNC__ __PRETTY_FUNCTION__
#endif
/* This is the call context: */
#define CS_CONTEXT __FUNC__, __FILE__, __LINE__
#ifdef DEBUG
int cs_assert(const char *func, const char *file, int line, const char *message);
int cs_hope(const char *func, const char *file, int line, const char *message);
#define ASSERT(x) ((x) ? 1 : cs_assert(CS_CONTEXT, #x))
#define HOPE(x) ((x) ? 1 : cs_hope(CS_CONTEXT, #x))
#else
#define ASSERT(x)
#define ASSERT(x)
#endif
#define new_(v, t) do { v = new t; if (!v) CSException::throwOSError(CS_CONTEXT, ENOMEM); } while (0)
/*
* -----------------------------------------------------------------------
* Call stack
*/
/*
* This macro must be placed at the start of every function.
* It records the current context so that we can
* dump a type of stack trace later if necessary.
*
* It also sets up the current thread pointer 'self'.
*/
#define inner_() int cs_frame = self->callTop++; \
do { \
if (cs_frame< CS_CALL_STACK_SIZE) { \
self->callStack[cs_frame].cs_func = __FUNC__; \
self->callStack[cs_frame].cs_file = __FILE__; \
self->callStack[cs_frame].cs_line = __LINE__; \
} \
} while (0)
#define outer_() self->callTop = cs_frame;
#define enter_() CSThread *self = CSThread::getSelf(); \
inner_()
/*
* On exit to a function, either exit_() or
* return_() must be called.
*/
#define exit_() do { \
outer_(); \
return; \
} while (0)
#define return_(x) do { \
outer_(); \
return(x); \
} while (0)
/*
* -----------------------------------------------------------------------
* Throwing and catching (the jump stack)
*/
/*
* Quote from the C99 spec on setjmp:
* All accessible objects have values, and all other components of the abstract
* machine have state, as of the time the longjmp function was called, except that
* the values of objects of automatic storage duration that are local to the function
* containing the invocation of the corresponding setjmp macro that do not have
* volatile-qualified type and have been changed between the setjmp invocation and
* longjmp call are indeterminate.
*
* GCC will not put variables into registers for which the address gets taken do use
* CLOBBER_PROTECT() to protect variables from being clobbered.
* This came from Jens Thoms Toerring. Thanks!
*/
#define CLOBBER_PROTECT(a) do { if ((void *)&(a) == (void*) 1) (a) = (a);} while(0)
int prof_setjmp(void);
#define TX_CHK_JMP() if ((self)->jumpDepth < 0 || (self)->jumpDepth >= CS_JUMP_STACK_SIZE) CSException::throwCoreError(__FUNC__, __FILE__, __LINE__, CS_ERR_JUMP_OVERFLOW)
#ifdef PROFILE
#define profile_setjmp prof_setjmp()
#else
#define profile_setjmp
#endif
#define throw_() (self)->throwException()
#define try_(n) int throw_##n; throw_##n = 0; TX_CHK_JMP(); \
(self)->jumpEnv[(self)->jumpDepth].jb_res_top = (self)->relTop; \
(self)->jumpEnv[(self)->jumpDepth].jb_call_top = (self)->callTop; \
(self)->jumpDepth++; profile_setjmp; \
if (setjmp((self)->jumpEnv[(self)->jumpDepth-1].jb_buffer)) goto catch_##n;
#define catch_(n) (self)->jumpDepth--; goto cont_##n; catch_##n: (self)->jumpDepth--; self->caught();
#define cont_(n) if (throw_##n) throw_(); cont_##n:
#define finally_(n) (self)->jumpDepth--; goto final_##n; catch_##n: throw_##n = 1; (self)->jumpDepth--; self->caught(); final_##n: {
#define finally_end_block(n) } if (throw_##n) throw_();
#define finally_end_block_no_throw(n) }
/*
* -----------------------------------------------------------------------
* The release stack
*/
#define push_(r) do { \
if ((self)->relTop >= (self)->relStack + CS_RELEASE_STACK_SIZE) {\
CSException::throwCoreError(CS_CONTEXT, CS_ERR_RELEASE_OVERFLOW); \
} \
(self)->relTop->r_type = CS_RELEASE_OBJECT; \
(self)->relTop->x.r_object = (r); \
(self)->relTop++; \
} while (0)
#define push_ptr_(r) do { \
if ((self)->relTop >= (self)->relStack + CS_RELEASE_STACK_SIZE) {\
CSException::throwCoreError(CS_CONTEXT, CS_ERR_RELEASE_OVERFLOW); \
} \
(self)->relTop->r_type = CS_RELEASE_MEM; \
(self)->relTop->x.r_mem = (r); \
(self)->relTop++; \
} while (0)
#define pop_(r) do { \
ASSERT((self)->relTop > (self)->relStack); \
if (((self)->relTop - 1)->r_type == CS_RELEASE_OBJECT) {\
ASSERT(((self)->relTop - 1)->x.r_object == ((CSObject *) r)); \
} else if (((self)->relTop - 1)->r_type == CS_RELEASE_MUTEX) {\
ASSERT(((self)->relTop - 1)->x.r_mutex == ((CSMutex *) r)); \
} else if (((self)->relTop - 1)->r_type == CS_RELEASE_POOLED) {\
ASSERT(((self)->relTop - 1)->x.r_pooled == ((CSPooled *) r)); \
} else if (((self)->relTop - 1)->r_type == CS_RELEASE_MEM) {\
ASSERT(((self)->relTop - 1)->x.r_mem == ((CSPooled *) r)); \
} else {\
ASSERT(false); \
} \
(self)->relTop--; \
} while (0)
#define retain_(r) do { \
(r)->retain(); \
push_(r); \
} while (0)
#define release_(r) do { \
ASSERT((self)->relTop > (self)->relStack); \
if (((self)->relTop - 1)->r_type == CS_RELEASE_OBJECT) {\
register CSObject *rp; \
rp = ((self)->relTop - 1)->x.r_object; \
ASSERT(rp == (CSObject *)(r)); \
(self)->relTop--; \
rp->release(); \
} else if (((self)->relTop - 1)->r_type == CS_RELEASE_MEM) {\
register void *mem; \
mem = ((self)->relTop - 1)->x.r_mem; \
ASSERT(mem == (void *)(r)); \
(self)->relTop--; \
cs_free(mem); \
} else {\
ASSERT(false); \
} \
} while (0)
#define lock_(r) do { \
if ((self)->relTop >= (self)->relStack + CS_RELEASE_STACK_SIZE) {\
CSException::throwCoreError(CS_CONTEXT, CS_ERR_RELEASE_OVERFLOW); \
} \
(r)->lock(); \
(self)->relTop->r_type = CS_RELEASE_MUTEX; \
(self)->relTop->x.r_mutex = (r); \
(self)->relTop++; \
} while (0)
#define unlock_(r) do { \
register CSMutex *rp; \
ASSERT((self)->relTop > (self)->relStack); \
ASSERT(((self)->relTop - 1)->r_type == CS_RELEASE_MUTEX); \
rp = ((self)->relTop - 1)->x.r_mutex; \
ASSERT(rp == (r)); \
(self)->relTop--; \
rp->unlock(); \
} while (0)
#define frompool_(r) do { \
if ((self)->relTop >= (self)->relStack + CS_RELEASE_STACK_SIZE) {\
CSException::throwCoreError(CS_CONTEXT, CS_ERR_RELEASE_OVERFLOW); \
} \
(self)->relTop->r_type = CS_RELEASE_POOLED; \
(self)->relTop->x.r_pooled = (r); \
(self)->relTop++; \
} while (0)
#define backtopool_(r) do { \
register CSPooled *rp; \
ASSERT((self)->relTop > (self)->relStack); \
ASSERT(((self)->relTop - 1)->r_type == CS_RELEASE_POOLED); \
rp = ((self)->relTop - 1)->x.r_pooled; \
ASSERT(rp == (r)); \
(self)->relTop--; \
rp->returnToPool(); \
} while (0)
#endif
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