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added support for the api providing the thread stack area

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This commit is contained in:
Joel Sherrill
1996-06-05 14:46:04 +00:00
parent 98162c35fb
commit 23305a25c3
2 changed files with 66 additions and 46 deletions
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56
c/src/exec/score/src/thread.c
View File

@@ -353,8 +353,17 @@ static unsigned32 _Thread_Stack_Allocate(
* Deallocate the Thread's stack. * Deallocate the Thread's stack.
*/ */
static void _Thread_Stack_Free(void *stack_addr) static void _Thread_Stack_Free(
Thread_Control *the_thread
)
{ {
/*
* If the API provided the stack space, then don't free it.
*/
if ( !the_thread->Start.core_allocated_stack )
return;
/* /*
* Call ONLY the CPU table stack free hook, or the * Call ONLY the CPU table stack free hook, or the
* the RTEMS workspace free. This is so the free * the RTEMS workspace free. This is so the free
@@ -362,9 +371,9 @@ static void _Thread_Stack_Free(void *stack_addr)
*/ */
if ( _CPU_Table.stack_free_hook ) if ( _CPU_Table.stack_free_hook )
(*_CPU_Table.stack_free_hook)( stack_addr ); (*_CPU_Table.stack_free_hook)( the_thread->Start.Initial_stack.area );
else else
_Workspace_Free( stack_addr ); _Workspace_Free( the_thread->Start.Initial_stack.area );
} }
/*PAGE /*PAGE
@@ -388,8 +397,8 @@ boolean _Thread_Initialize(
) )
{ {
unsigned32 actual_stack_size; unsigned32 actual_stack_size = 0;
void *stack; void *stack = NULL;
void *fp_area; void *fp_area;
void *extensions_area; void *extensions_area;
@@ -397,23 +406,29 @@ boolean _Thread_Initialize(
* Allocate and Initialize the stack for this thread. * Allocate and Initialize the stack for this thread.
*/ */
if ( !_Stack_Is_enough( stack_size ) )
actual_stack_size = STACK_MINIMUM_SIZE;
else
actual_stack_size = stack_size;
actual_stack_size = _Stack_Adjust_size( actual_stack_size );
stack = stack_area;
if ( !stack ) { if ( !stack ) {
if ( !_Stack_Is_enough( stack_size ) )
actual_stack_size = STACK_MINIMUM_SIZE;
else
actual_stack_size = stack_size;
actual_stack_size = _Stack_Adjust_size( actual_stack_size );
stack = stack_area;
actual_stack_size = _Thread_Stack_Allocate( the_thread, stack_size ); actual_stack_size = _Thread_Stack_Allocate( the_thread, stack_size );
if ( !actual_stack_size ) if ( !actual_stack_size )
return FALSE; /* stack allocation failed */ return FALSE; /* stack allocation failed */
stack = the_thread->Start.stack; stack = the_thread->Start.stack;
} else
the_thread->Start.stack = NULL; the_thread->Start.core_allocated_stack = TRUE;
} else {
stack = stack_area;
actual_stack_size = stack_size;
the_thread->Start.core_allocated_stack = FALSE;
}
_Stack_Initialize( _Stack_Initialize(
&the_thread->Start.Initial_stack, &the_thread->Start.Initial_stack,
@@ -429,8 +444,7 @@ boolean _Thread_Initialize(
fp_area = _Workspace_Allocate( CONTEXT_FP_SIZE ); fp_area = _Workspace_Allocate( CONTEXT_FP_SIZE );
if ( !fp_area ) { if ( !fp_area ) {
if ( the_thread->Start.stack ) _Thread_Stack_Free( the_thread );
(void) _Thread_Stack_Free( the_thread->Start.stack );
return FALSE; return FALSE;
} }
fp_area = _Context_Fp_start( fp_area, 0 ); fp_area = _Context_Fp_start( fp_area, 0 );
@@ -440,7 +454,6 @@ boolean _Thread_Initialize(
the_thread->fp_context = fp_area; the_thread->fp_context = fp_area;
the_thread->Start.fp_context = fp_area; the_thread->Start.fp_context = fp_area;
/* /*
* Allocate the extensions area for this thread * Allocate the extensions area for this thread
@@ -455,8 +468,7 @@ boolean _Thread_Initialize(
if ( fp_area ) if ( fp_area )
(void) _Workspace_Free( fp_area ); (void) _Workspace_Free( fp_area );
if ( the_thread->Start.stack ) _Thread_Stack_Free( the_thread );
(void) _Thread_Stack_Free( the_thread->Start.stack );
return FALSE; return FALSE;
} }
@@ -498,8 +510,7 @@ boolean _Thread_Initialize(
if ( fp_area ) if ( fp_area )
(void) _Workspace_Free( fp_area ); (void) _Workspace_Free( fp_area );
if ( the_thread->Start.stack ) _Thread_Stack_Free( the_thread->Start.stack );
(void) _Thread_Stack_Free( the_thread->Start.stack );
return FALSE; return FALSE;
} }
@@ -629,8 +640,7 @@ void _Thread_Close(
if ( the_thread->Start.fp_context ) if ( the_thread->Start.fp_context )
(void) _Workspace_Free( the_thread->Start.fp_context ); (void) _Workspace_Free( the_thread->Start.fp_context );
if ( the_thread->Start.stack ) _Thread_Stack_Free( the_thread );
(void) _Thread_Stack_Free( the_thread->Start.stack );
if ( the_thread->extensions ) if ( the_thread->extensions )
(void) _Workspace_Free( the_thread->extensions ); (void) _Workspace_Free( the_thread->extensions );

56
cpukit/score/src/thread.c
View File

@@ -353,8 +353,17 @@ static unsigned32 _Thread_Stack_Allocate(
* Deallocate the Thread's stack. * Deallocate the Thread's stack.
*/ */
static void _Thread_Stack_Free(void *stack_addr) static void _Thread_Stack_Free(
Thread_Control *the_thread
)
{ {
/*
* If the API provided the stack space, then don't free it.
*/
if ( !the_thread->Start.core_allocated_stack )
return;
/* /*
* Call ONLY the CPU table stack free hook, or the * Call ONLY the CPU table stack free hook, or the
* the RTEMS workspace free. This is so the free * the RTEMS workspace free. This is so the free
@@ -362,9 +371,9 @@ static void _Thread_Stack_Free(void *stack_addr)
*/ */
if ( _CPU_Table.stack_free_hook ) if ( _CPU_Table.stack_free_hook )
(*_CPU_Table.stack_free_hook)( stack_addr ); (*_CPU_Table.stack_free_hook)( the_thread->Start.Initial_stack.area );
else else
_Workspace_Free( stack_addr ); _Workspace_Free( the_thread->Start.Initial_stack.area );
} }
/*PAGE /*PAGE
@@ -388,8 +397,8 @@ boolean _Thread_Initialize(
) )
{ {
unsigned32 actual_stack_size; unsigned32 actual_stack_size = 0;
void *stack; void *stack = NULL;
void *fp_area; void *fp_area;
void *extensions_area; void *extensions_area;
@@ -397,23 +406,29 @@ boolean _Thread_Initialize(
* Allocate and Initialize the stack for this thread. * Allocate and Initialize the stack for this thread.
*/ */
if ( !_Stack_Is_enough( stack_size ) )
actual_stack_size = STACK_MINIMUM_SIZE;
else
actual_stack_size = stack_size;
actual_stack_size = _Stack_Adjust_size( actual_stack_size );
stack = stack_area;
if ( !stack ) { if ( !stack ) {
if ( !_Stack_Is_enough( stack_size ) )
actual_stack_size = STACK_MINIMUM_SIZE;
else
actual_stack_size = stack_size;
actual_stack_size = _Stack_Adjust_size( actual_stack_size );
stack = stack_area;
actual_stack_size = _Thread_Stack_Allocate( the_thread, stack_size ); actual_stack_size = _Thread_Stack_Allocate( the_thread, stack_size );
if ( !actual_stack_size ) if ( !actual_stack_size )
return FALSE; /* stack allocation failed */ return FALSE; /* stack allocation failed */
stack = the_thread->Start.stack; stack = the_thread->Start.stack;
} else
the_thread->Start.stack = NULL; the_thread->Start.core_allocated_stack = TRUE;
} else {
stack = stack_area;
actual_stack_size = stack_size;
the_thread->Start.core_allocated_stack = FALSE;
}
_Stack_Initialize( _Stack_Initialize(
&the_thread->Start.Initial_stack, &the_thread->Start.Initial_stack,
@@ -429,8 +444,7 @@ boolean _Thread_Initialize(
fp_area = _Workspace_Allocate( CONTEXT_FP_SIZE ); fp_area = _Workspace_Allocate( CONTEXT_FP_SIZE );
if ( !fp_area ) { if ( !fp_area ) {
if ( the_thread->Start.stack ) _Thread_Stack_Free( the_thread );
(void) _Thread_Stack_Free( the_thread->Start.stack );
return FALSE; return FALSE;
} }
fp_area = _Context_Fp_start( fp_area, 0 ); fp_area = _Context_Fp_start( fp_area, 0 );
@@ -440,7 +454,6 @@ boolean _Thread_Initialize(
the_thread->fp_context = fp_area; the_thread->fp_context = fp_area;
the_thread->Start.fp_context = fp_area; the_thread->Start.fp_context = fp_area;
/* /*
* Allocate the extensions area for this thread * Allocate the extensions area for this thread
@@ -455,8 +468,7 @@ boolean _Thread_Initialize(
if ( fp_area ) if ( fp_area )
(void) _Workspace_Free( fp_area ); (void) _Workspace_Free( fp_area );
if ( the_thread->Start.stack ) _Thread_Stack_Free( the_thread );
(void) _Thread_Stack_Free( the_thread->Start.stack );
return FALSE; return FALSE;
} }
@@ -498,8 +510,7 @@ boolean _Thread_Initialize(
if ( fp_area ) if ( fp_area )
(void) _Workspace_Free( fp_area ); (void) _Workspace_Free( fp_area );
if ( the_thread->Start.stack ) _Thread_Stack_Free( the_thread->Start.stack );
(void) _Thread_Stack_Free( the_thread->Start.stack );
return FALSE; return FALSE;
} }
@@ -629,8 +640,7 @@ void _Thread_Close(
if ( the_thread->Start.fp_context ) if ( the_thread->Start.fp_context )
(void) _Workspace_Free( the_thread->Start.fp_context ); (void) _Workspace_Free( the_thread->Start.fp_context );
if ( the_thread->Start.stack ) _Thread_Stack_Free( the_thread );
(void) _Thread_Stack_Free( the_thread->Start.stack );
if ( the_thread->extensions ) if ( the_thread->extensions )
(void) _Workspace_Free( the_thread->extensions ); (void) _Workspace_Free( the_thread->extensions );