Browse Source
reconstruct shm/allocator
reconstruct shm/allocator
git-svn-id: svn://svn.lighttpd.net/xcache/trunk@148 c26eb9a1-5813-0410-bd6c-c2e55f420ca71.1
Xuefer
15 years ago
15 changed files with 578 additions and 101 deletions
-
4Makefile.frag
-
2config.m4
-
2config.w32
-
80mem.c
-
74mem.h
-
59mmap.c
-
13myshm.h
-
2processor/head.m4
-
4processor/main.m4
-
2utils.c
-
212xc_malloc.c
-
76xc_shm.c
-
60xc_shm.h
-
86xcache.c
-
3xcache.h
@ -1,13 +0,0 @@ |
|||
typedef struct _xc_shm_t xc_shm_t; |
|||
typedef size_t xc_shmsize_t; |
|||
|
|||
int xc_shm_can_readonly(xc_shm_t *shm); |
|||
int xc_shm_is_readwrite(xc_shm_t *shm, const void *p); |
|||
int xc_shm_is_readonly(xc_shm_t *shm, const void *p); |
|||
void *xc_shm_to_readwrite(xc_shm_t *shm, void *p); |
|||
void *xc_shm_to_readonly(xc_shm_t *shm, void *p); |
|||
|
|||
void *xc_shm_ptr(xc_shm_t *shm); |
|||
|
|||
xc_shm_t *xc_shm_init(const char *path, xc_shmsize_t size, zend_bool readonly_protection); |
|||
void xc_shm_destroy(xc_shm_t *shm); |
|||
@ -0,0 +1,212 @@ |
|||
#define XC_SHM_IMPL |
|||
#define XC_MEM_IMPL |
|||
#include <stdlib.h> |
|||
#include <stdio.h> |
|||
#include <string.h> |
|||
#include "xc_shm.h" |
|||
#include "php.h" |
|||
#include "align.h" |
|||
|
|||
struct _xc_mem_t { |
|||
const xc_mem_handlers_t *handlers; |
|||
xc_shm_t *shm; |
|||
xc_memsize_t size; |
|||
xc_memsize_t avail; /* total free */ |
|||
}; |
|||
|
|||
#define CHECK(x, e) do { if ((x) == NULL) { zend_error(E_ERROR, "XCache: " e); goto err; } } while (0) |
|||
|
|||
static XC_MEM_MALLOC(xc_malloc_malloc) /* {{{ */ |
|||
{ |
|||
return malloc(size); |
|||
} |
|||
/* }}} */ |
|||
static XC_MEM_FREE(xc_malloc_free) /* {{{ return block size freed */ |
|||
{ |
|||
free((void *) p); |
|||
return 0; |
|||
} |
|||
/* }}} */ |
|||
static XC_MEM_CALLOC(xc_malloc_calloc) /* {{{ */ |
|||
{ |
|||
return calloc(memb, size); |
|||
} |
|||
/* }}} */ |
|||
static XC_MEM_REALLOC(xc_malloc_realloc) /* {{{ */ |
|||
{ |
|||
return realloc((void *) p, size); |
|||
} |
|||
/* }}} */ |
|||
static XC_MEM_STRNDUP(xc_malloc_strndup) /* {{{ */ |
|||
{ |
|||
char *p = malloc(len); |
|||
if (!p) { |
|||
return NULL; |
|||
} |
|||
return memcpy(p, str, len); |
|||
} |
|||
/* }}} */ |
|||
static XC_MEM_STRDUP(xc_malloc_strdup) /* {{{ */ |
|||
{ |
|||
return xc_malloc_strndup(mem, str, strlen(str) + 1); |
|||
} |
|||
/* }}} */ |
|||
|
|||
static XC_MEM_AVAIL(xc_malloc_avail) /* {{{ */ |
|||
{ |
|||
return mem->avail; |
|||
} |
|||
/* }}} */ |
|||
static XC_MEM_SIZE(xc_malloc_size) /* {{{ */ |
|||
{ |
|||
return mem->size; |
|||
} |
|||
/* }}} */ |
|||
|
|||
static XC_MEM_FREEBLOCK_FIRST(xc_malloc_freeblock_first) /* {{{ */ |
|||
{ |
|||
return (void *) -1; |
|||
} |
|||
/* }}} */ |
|||
XC_MEM_FREEBLOCK_NEXT(xc_malloc_freeblock_next) /* {{{ */ |
|||
{ |
|||
return NULL; |
|||
} |
|||
/* }}} */ |
|||
XC_MEM_BLOCK_SIZE(xc_malloc_block_size) /* {{{ */ |
|||
{ |
|||
return 0; |
|||
} |
|||
/* }}} */ |
|||
XC_MEM_BLOCK_OFFSET(xc_malloc_block_offset) /* {{{ */ |
|||
{ |
|||
return 0; |
|||
} |
|||
/* }}} */ |
|||
|
|||
static XC_MEM_INIT(xc_mem_malloc_init) /* {{{ */ |
|||
{ |
|||
xc_block_t *b; |
|||
|
|||
#define MINSIZE (ALIGN(sizeof(xc_mem_t))) |
|||
/* requires at least the header and 1 tail block */ |
|||
if (size < MINSIZE) { |
|||
fprintf(stderr, "xc_mem_malloc_init requires %d bytes at least\n", MINSIZE); |
|||
return NULL; |
|||
} |
|||
mem->shm = shm; |
|||
mem->size = size; |
|||
mem->avail = size - MINSIZE; |
|||
#undef MINSIZE |
|||
|
|||
return mem; |
|||
} |
|||
/* }}} */ |
|||
static XC_MEM_DESTROY(xc_mem_malloc_destroy) /* {{{ */ |
|||
{ |
|||
} |
|||
/* }}} */ |
|||
|
|||
// {{{ xc_shm_t |
|||
struct _xc_shm_t { |
|||
xc_shm_handlers_t *handlers; |
|||
xc_shmsize_t size; |
|||
xc_shmsize_t memoffset; |
|||
}; |
|||
|
|||
#undef NDEBUG |
|||
#ifdef ALLOC_DEBUG |
|||
# define inline |
|||
#else |
|||
# define NDEBUG |
|||
#endif |
|||
#include <assert.h> |
|||
/* }}} */ |
|||
|
|||
static XC_SHM_CAN_READONLY(xc_malloc_can_readonly) /* {{{ */ |
|||
{ |
|||
return 0; |
|||
} |
|||
/* }}} */ |
|||
static XC_SHM_IS_READWRITE(xc_malloc_is_readwrite) /* {{{ */ |
|||
{ |
|||
return 0; |
|||
} |
|||
/* }}} */ |
|||
static XC_SHM_IS_READONLY(xc_malloc_is_readonly) /* {{{ */ |
|||
{ |
|||
return 0; |
|||
} |
|||
/* }}} */ |
|||
static XC_SHM_TO_READWRITE(xc_malloc_to_readwrite) /* {{{ */ |
|||
{ |
|||
return p; |
|||
} |
|||
/* }}} */ |
|||
static XC_SHM_TO_READONLY(xc_malloc_to_readonly) /* {{{ */ |
|||
{ |
|||
return p; |
|||
} |
|||
/* }}} */ |
|||
|
|||
static XC_SHM_DESTROY(xc_malloc_destroy) /* {{{ */ |
|||
{ |
|||
free(shm); |
|||
return; |
|||
} |
|||
/* }}} */ |
|||
static XC_SHM_INIT(xc_malloc_init) /* {{{ */ |
|||
{ |
|||
xc_shm_t *shm; |
|||
CHECK(shm = calloc(1, sizeof(xc_shm_t)), "shm OOM"); |
|||
shm->size = size; |
|||
|
|||
return shm; |
|||
err: |
|||
return NULL; |
|||
} |
|||
/* }}} */ |
|||
|
|||
static XC_SHM_MEMINIT(xc_malloc_meminit) /* {{{ */ |
|||
{ |
|||
xc_mem_t *mem; |
|||
if (shm->memoffset + size > shm->size) { |
|||
zend_error(E_ERROR, "XCache: internal error at %s#%d", __FILE__, __LINE__); |
|||
return NULL; |
|||
} |
|||
shm->memoffset += size; |
|||
CHECK(mem = calloc(1, sizeof(xc_mem_t)), "mem OOM"); |
|||
mem->handlers = shm->handlers->memhandlers; |
|||
mem->handlers->init(shm, mem, size); |
|||
return mem; |
|||
err: |
|||
return NULL; |
|||
} |
|||
/* }}} */ |
|||
static XC_SHM_MEMDESTROY(xc_malloc_memdestroy) /* {{{ */ |
|||
{ |
|||
mem->handlers->destroy(mem); |
|||
free(mem); |
|||
} |
|||
/* }}} */ |
|||
|
|||
#define xc_malloc_destroy xc_mem_malloc_destroy |
|||
#define xc_malloc_init xc_mem_malloc_init |
|||
static xc_mem_handlers_t xc_mem_malloc_handlers = XC_MEM_HANDLERS(malloc); |
|||
#undef xc_malloc_init |
|||
#undef xc_malloc_destroy |
|||
static xc_shm_handlers_t xc_shm_malloc_handlers = XC_SHM_HANDLERS(malloc); |
|||
void xc_shm_malloc_register() /* {{{ */ |
|||
{ |
|||
if (xc_mem_scheme_register("malloc", &xc_mem_malloc_handlers) == 0) { |
|||
zend_error(E_ERROR, "XCache: failed to register malloc mem_scheme"); |
|||
} |
|||
|
|||
CHECK(xc_shm_malloc_handlers.memhandlers = xc_mem_scheme_find("malloc"), "cannot find malloc handlers"); |
|||
if (xc_shm_scheme_register("malloc", &xc_shm_malloc_handlers) == 0) { |
|||
zend_error(E_ERROR, "XCache: failed to register malloc shm_scheme"); |
|||
} |
|||
err: |
|||
return; |
|||
} |
|||
/* }}} */ |
|||
@ -0,0 +1,76 @@ |
|||
#ifdef TEST |
|||
#include <limits.h> |
|||
#include <stdio.h> |
|||
#else |
|||
#include <php.h> |
|||
#endif |
|||
|
|||
#include <assert.h> |
|||
#include <stdlib.h> |
|||
#include <string.h> |
|||
#include "xc_shm.h" |
|||
|
|||
typedef struct { |
|||
const char *name; |
|||
const xc_shm_handlers_t *handlers; |
|||
} xc_shm_scheme_t; |
|||
static xc_shm_scheme_t xc_shm_schemes[10]; |
|||
|
|||
void xc_shm_init_modules() /* {{{ */ |
|||
{ |
|||
memset(xc_shm_schemes, 0, sizeof(xc_shm_schemes)); |
|||
|
|||
extern void xc_shm_mem_init(); |
|||
xc_shm_mem_init(); |
|||
|
|||
extern void xc_shm_malloc_register(); |
|||
xc_shm_malloc_register(); |
|||
|
|||
extern void xc_shm_mmap_register(); |
|||
xc_shm_mmap_register(); |
|||
} |
|||
/* }}} */ |
|||
int xc_shm_scheme_register(const char *name, const xc_shm_handlers_t *handlers) /* {{{ */ |
|||
{ |
|||
int i; |
|||
for (i = 0; i < 10; i ++) { |
|||
if (!xc_shm_schemes[i].name) { |
|||
xc_shm_schemes[i].name = name; |
|||
xc_shm_schemes[i].handlers = handlers; |
|||
return 1; |
|||
} |
|||
} |
|||
return 0; |
|||
} |
|||
/* }}} */ |
|||
const xc_shm_handlers_t *xc_shm_scheme_find(const char *name) /* {{{ */ |
|||
{ |
|||
int i; |
|||
for (i = 0; i < 10 && xc_shm_schemes[i].name; i ++) { |
|||
if (strcmp(xc_shm_schemes[i].name, name) == 0) { |
|||
return xc_shm_schemes[i].handlers; |
|||
} |
|||
} |
|||
return NULL; |
|||
} |
|||
/* }}} */ |
|||
xc_shm_t *xc_shm_init(const char *type, xc_shmsize_t size, int readonly_protection, const void *arg1, const void *arg2) /* {{{ */ |
|||
{ |
|||
const xc_shm_handlers_t *handlers = xc_shm_scheme_find(type); |
|||
|
|||
if (handlers) { |
|||
xc_shm_t *shm = handlers->init(size, readonly_protection, arg1, arg2); |
|||
if (shm) { |
|||
shm->handlers = handlers; |
|||
} |
|||
return shm; |
|||
} |
|||
|
|||
return NULL; |
|||
} |
|||
/* }}} */ |
|||
void xc_shm_destroy(xc_shm_t *shm) /* {{{ */ |
|||
{ |
|||
shm->handlers->destroy(shm); |
|||
} |
|||
/* }}} */ |
|||
@ -0,0 +1,60 @@ |
|||
typedef struct _xc_shm_t xc_shm_t; |
|||
typedef size_t xc_shmsize_t; |
|||
|
|||
#include "mem.h" |
|||
|
|||
/* shm */ |
|||
#define XC_SHM_CAN_READONLY(func) int func(xc_shm_t *shm) |
|||
#define XC_SHM_IS_READWRITE(func) int func(xc_shm_t *shm, const void *p) |
|||
#define XC_SHM_IS_READONLY(func) int func(xc_shm_t *shm, const void *p) |
|||
#define XC_SHM_TO_READWRITE(func) void *func(xc_shm_t *shm, void *p) |
|||
#define XC_SHM_TO_READONLY(func) void *func(xc_shm_t *shm, void *p) |
|||
|
|||
#define XC_SHM_INIT(func) xc_shm_t *func(xc_shmsize_t size, int readonly_protection, const void *arg1, const void *arg2) |
|||
#define XC_SHM_DESTROY(func) void func(xc_shm_t *shm) |
|||
|
|||
#define XC_SHM_MEMINIT(func) xc_mem_t *func(xc_shm_t *shm, xc_memsize_t size) |
|||
#define XC_SHM_MEMDESTROY(func) void func(xc_mem_t *mem) |
|||
|
|||
#define XC_SHM_HANDLERS(name) { \ |
|||
NULL \ |
|||
, xc_##name##_can_readonly \ |
|||
, xc_##name##_is_readwrite \ |
|||
, xc_##name##_is_readonly \ |
|||
, xc_##name##_to_readwrite \ |
|||
, xc_##name##_to_readonly \ |
|||
\ |
|||
, xc_##name##_init \ |
|||
, xc_##name##_destroy \ |
|||
\ |
|||
, xc_##name##_meminit \ |
|||
, xc_##name##_memdestroy \ |
|||
} |
|||
|
|||
typedef struct { |
|||
const xc_mem_handlers_t *memhandlers; |
|||
XC_SHM_CAN_READONLY((*can_readonly)); |
|||
XC_SHM_IS_READWRITE((*is_readwrite)); |
|||
XC_SHM_IS_READONLY((*is_readonly)); |
|||
XC_SHM_TO_READWRITE((*to_readwrite)); |
|||
XC_SHM_TO_READONLY((*to_readonly)); |
|||
XC_SHM_INIT((*init)); |
|||
XC_SHM_DESTROY((*destroy)); |
|||
|
|||
XC_SHM_MEMINIT((*meminit)); |
|||
XC_SHM_MEMDESTROY((*memdestroy)); |
|||
} xc_shm_handlers_t; |
|||
|
|||
|
|||
#ifndef XC_SHM_IMPL |
|||
struct _xc_shm_t { |
|||
const xc_shm_handlers_t *handlers; |
|||
}; |
|||
#endif |
|||
|
|||
void xc_shm_init_modules(); |
|||
int xc_shm_scheme_register(const char *name, const xc_shm_handlers_t *handlers); |
|||
const xc_shm_handlers_t *xc_shm_scheme_find(const char *name); |
|||
|
|||
xc_shm_t *xc_shm_init(const char *type, xc_shmsize_t size, int readonly_protection, const void *arg1, const void *arg2); |
|||
void xc_shm_destroy(xc_shm_t *shm); |
|||
Write
Preview
Loading…
Cancel
Save
Reference in new issue