/*
|
/*
|
* (c) Copyright 1990-1996 OPEN SOFTWARE FOUNDATION, INC.
|
* (c) Copyright 1990-1996 OPEN SOFTWARE FOUNDATION, INC.
|
* (c) Copyright 1990-1996 HEWLETT-PACKARD COMPANY
|
* (c) Copyright 1990-1996 HEWLETT-PACKARD COMPANY
|
* (c) Copyright 1990-1996 DIGITAL EQUIPMENT CORPORATION
|
* (c) Copyright 1990-1996 DIGITAL EQUIPMENT CORPORATION
|
* (c) Copyright 1991, 1992 Siemens-Nixdorf Information Systems
|
* (c) Copyright 1991, 1992 Siemens-Nixdorf Information Systems
|
* To anyone who acknowledges that this file is provided "AS IS" without
|
* To anyone who acknowledges that this file is provided "AS IS" without
|
* any express or implied warranty: permission to use, copy, modify, and
|
* any express or implied warranty: permission to use, copy, modify, and
|
* distribute this file for any purpose is hereby granted without fee,
|
* distribute this file for any purpose is hereby granted without fee,
|
* provided that the above copyright notices and this notice appears in
|
* provided that the above copyright notices and this notice appears in
|
* all source code copies, and that none of the names listed above be used
|
* all source code copies, and that none of the names listed above be used
|
* in advertising or publicity pertaining to distribution of the software
|
* in advertising or publicity pertaining to distribution of the software
|
* without specific, written prior permission. None of these organizations
|
* without specific, written prior permission. None of these organizations
|
* makes any representations about the suitability of this software for
|
* makes any representations about the suitability of this software for
|
* any purpose.
|
* any purpose.
|
*/
|
*/
|
/*
|
/*
|
* Header file for stack management (internal to cma_stack.c, but
|
* Header file for stack management (internal to cma_stack.c, but
|
* separate for convenience, and unit testing).
|
* separate for convenience, and unit testing).
|
*/
|
*/
|
|
|
#ifndef CMA_STACK_INT
|
#ifndef CMA_STACK_INT
|
#define CMA_STACK_INT
|
#define CMA_STACK_INT
|
|
|
/*
|
/*
|
* INCLUDE FILES
|
* INCLUDE FILES
|
*/
|
*/
|
|
|
#include <cma.h>
|
#include <cma.h>
|
#include <cma_queue.h>
|
#include <cma_queue.h>
|
#include <cma_list.h>
|
#include <cma_list.h>
|
#include <cma_tcb_defs.h>
|
#include <cma_tcb_defs.h>
|
|
|
/*
|
/*
|
* CONSTANTS AND MACROS
|
* CONSTANTS AND MACROS
|
*/
|
*/
|
|
|
#define cma___c_first_free_chunk 0
|
#define cma___c_first_free_chunk 0
|
#define cma___c_min_count 2 /* Smallest number of chunks to leave */
|
#define cma___c_min_count 2 /* Smallest number of chunks to leave */
|
#define cma___c_end (-1) /* End of free list (flag) */
|
#define cma___c_end (-1) /* End of free list (flag) */
|
#define cma__c_yellow_size 0
|
#define cma__c_yellow_size 0
|
|
|
/*
|
/*
|
* Cluster types
|
* Cluster types
|
*/
|
*/
|
#define cma___c_cluster 0 /* Default cluster */
|
#define cma___c_cluster 0 /* Default cluster */
|
#define cma___c_bigstack 1 /* Looks like a cluster, but it's a stack */
|
#define cma___c_bigstack 1 /* Looks like a cluster, but it's a stack */
|
|
|
|
|
#define cma___c_null_cluster (cma___t_cluster *)cma_c_null_ptr
|
#define cma___c_null_cluster (cma___t_cluster *)cma_c_null_ptr
|
|
|
|
|
/*
|
/*
|
* TYPEDEFS
|
* TYPEDEFS
|
*/
|
*/
|
|
|
#ifndef __STDC__
|
#ifndef __STDC__
|
struct CMA__T_INT_STACK;
|
struct CMA__T_INT_STACK;
|
#endif
|
#endif
|
|
|
typedef cma_t_natural cma___t_index; /* Type for chunk index */
|
typedef cma_t_natural cma___t_index; /* Type for chunk index */
|
|
|
typedef struct CMA___T_CLU_DESC {
|
typedef struct CMA___T_CLU_DESC {
|
cma__t_list list; /* Queue element for cluster list */
|
cma__t_list list; /* Queue element for cluster list */
|
cma_t_integer type; /* Type of cluster */
|
cma_t_integer type; /* Type of cluster */
|
cma_t_address stacks;
|
cma_t_address stacks;
|
cma_t_address limit;
|
cma_t_address limit;
|
} cma___t_clu_desc;
|
} cma___t_clu_desc;
|
|
|
typedef union CMA___T_MAP_ENTRY {
|
typedef union CMA___T_MAP_ENTRY {
|
struct {
|
struct {
|
cma__t_int_tcb *tcb; /* TCB associated with stack chunk */
|
cma__t_int_tcb *tcb; /* TCB associated with stack chunk */
|
struct CMA__T_INT_STACK *stack; /* Stack desc. ass. with stack chunk */
|
struct CMA__T_INT_STACK *stack; /* Stack desc. ass. with stack chunk */
|
} mapped;
|
} mapped;
|
struct {
|
struct {
|
cma___t_index size; /* Number of chunks in block */
|
cma___t_index size; /* Number of chunks in block */
|
cma___t_index next; /* Next free block */
|
cma___t_index next; /* Next free block */
|
} free;
|
} free;
|
} cma___t_map_entry;
|
} cma___t_map_entry;
|
|
|
/*
|
/*
|
* NOTE: It is VERY IMPORTANT that both cma___t_cluster and cma___t_bigstack
|
* NOTE: It is VERY IMPORTANT that both cma___t_cluster and cma___t_bigstack
|
* begin with the cma___t_clu_desc structure, as there is some code in the
|
* begin with the cma___t_clu_desc structure, as there is some code in the
|
* stack manager that relies on being able to treat both as equivalent!
|
* stack manager that relies on being able to treat both as equivalent!
|
*/
|
*/
|
typedef struct CMA___T_CLUSTER {
|
typedef struct CMA___T_CLUSTER {
|
cma___t_clu_desc desc; /* Describe this cluster */
|
cma___t_clu_desc desc; /* Describe this cluster */
|
cma___t_map_entry map[cma__c_chunk_count]; /* thread map */
|
cma___t_map_entry map[cma__c_chunk_count]; /* thread map */
|
cma___t_index free; /* First free chunk index */
|
cma___t_index free; /* First free chunk index */
|
} cma___t_cluster;
|
} cma___t_cluster;
|
|
|
/*
|
/*
|
* NOTE: It is VERY IMPORTANT that both cma___t_cluster and cma___t_bigstack
|
* NOTE: It is VERY IMPORTANT that both cma___t_cluster and cma___t_bigstack
|
* begin with the cma___t_clu_desc structure, as there is some code in the
|
* begin with the cma___t_clu_desc structure, as there is some code in the
|
* stack manager that relies on being able to treat both as equivalent!
|
* stack manager that relies on being able to treat both as equivalent!
|
*/
|
*/
|
typedef struct CMA___T_BIGSTACK {
|
typedef struct CMA___T_BIGSTACK {
|
cma___t_clu_desc desc; /* Describe this cluster */
|
cma___t_clu_desc desc; /* Describe this cluster */
|
cma__t_int_tcb *tcb; /* TCB associated with stack */
|
cma__t_int_tcb *tcb; /* TCB associated with stack */
|
struct CMA__T_INT_STACK *stack; /* Stack desc. ass. with stack */
|
struct CMA__T_INT_STACK *stack; /* Stack desc. ass. with stack */
|
cma_t_natural size; /* Size of big stack */
|
cma_t_natural size; /* Size of big stack */
|
cma_t_boolean in_use; /* Set if allocated */
|
cma_t_boolean in_use; /* Set if allocated */
|
} cma___t_bigstack;
|
} cma___t_bigstack;
|
|
|
#if _CMA_PROTECT_MEMORY_
|
#if _CMA_PROTECT_MEMORY_
|
typedef struct CMA___T_INT_HOLE {
|
typedef struct CMA___T_INT_HOLE {
|
cma__t_queue link; /* Link holes together */
|
cma__t_queue link; /* Link holes together */
|
cma_t_boolean protected; /* Set when pages are protected */
|
cma_t_boolean protected; /* Set when pages are protected */
|
cma_t_address first; /* First protected byte */
|
cma_t_address first; /* First protected byte */
|
cma_t_address last; /* Last protected byte */
|
cma_t_address last; /* Last protected byte */
|
} cma___t_int_hole;
|
} cma___t_int_hole;
|
#endif
|
#endif
|
|
|
typedef struct CMA__T_INT_STACK {
|
typedef struct CMA__T_INT_STACK {
|
cma__t_object header; /* Common header (sequence, type info */
|
cma__t_object header; /* Common header (sequence, type info */
|
cma__t_int_attr *attributes; /* Backpointer to attr obj */
|
cma__t_int_attr *attributes; /* Backpointer to attr obj */
|
cma___t_cluster *cluster; /* Stack's cluster */
|
cma___t_cluster *cluster; /* Stack's cluster */
|
cma_t_address stack_base; /* base address of stack */
|
cma_t_address stack_base; /* base address of stack */
|
cma_t_address yellow_zone; /* first address of yellow zone */
|
cma_t_address yellow_zone; /* first address of yellow zone */
|
cma_t_address last_guard; /* last address of guard pages */
|
cma_t_address last_guard; /* last address of guard pages */
|
cma_t_natural first_chunk; /* First chunk allocated */
|
cma_t_natural first_chunk; /* First chunk allocated */
|
cma_t_natural chunk_count; /* Count of chunks allocated */
|
cma_t_natural chunk_count; /* Count of chunks allocated */
|
cma__t_int_tcb *tcb; /* TCB backpointer */
|
cma__t_int_tcb *tcb; /* TCB backpointer */
|
#if _CMA_PROTECT_MEMORY_
|
#if _CMA_PROTECT_MEMORY_
|
cma___t_int_hole hole; /* Description of hole */
|
cma___t_int_hole hole; /* Description of hole */
|
#endif
|
#endif
|
} cma__t_int_stack;
|
} cma__t_int_stack;
|
|
|
/*
|
/*
|
* GLOBAL DATA
|
* GLOBAL DATA
|
*/
|
*/
|
|
|
/*
|
/*
|
* INTERNAL INTERFACES
|
* INTERNAL INTERFACES
|
*/
|
*/
|
|
|
#endif
|
#endif
|
|
|
