shmem.c

Apache V2.0.15 Alpha For Linuxhttpd-2_0_15-alpha.tar.Z

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#include "apr_general.h"
#include "apr_shmem.h"
#include "apr_errno.h"
#include "apr_lib.h"
#include "apr_strings.h"
#include <umalloc.h>
#include <stdlib.h>

struct shmem_t {
    void *memblock;
    Heap_t heap;
};



apr_status_t apr_shm_init(struct shmem_t **m, apr_size_t reqsize, const char *file, apr_pool_t *cont)
{
    int rc;
    struct shmem_t *newm = (struct shmem_t *)apr_palloc(cont, sizeof(struct shmem_t));
    char *name = NULL;

    if (file)
        name = apr_pstrcat(cont, "\\SHAREMEM\\", file, NULL);

    rc = DosAllocSharedMem(&(newm->memblock), name, reqsize, PAG_COMMIT|OBJ_GETTABLE|PAG_READ|PAG_WRITE);

    if (rc)
        return APR_OS2_STATUS(rc);

    newm->heap = _ucreate(newm->memblock, reqsize, !_BLOCK_CLEAN, _HEAP_REGULAR|_HEAP_SHARED, NULL, NULL);
    _uopen(newm->heap);
    *m = newm;
    return APR_SUCCESS;
}



apr_status_t apr_shm_destroy(struct shmem_t *m)
{
    _uclose(m->heap);
    _udestroy(m->heap, _FORCE);
    DosFreeMem(m->memblock);
    return APR_SUCCESS;
}



void *apr_shm_malloc(struct shmem_t *m, apr_size_t reqsize)
{
    return _umalloc(m->heap, reqsize);
}



void *apr_shm_calloc(struct shmem_t *m, apr_size_t size)
{
    return _ucalloc(m->heap, size, 1);
}



apr_status_t apr_shm_free(struct shmem_t *m, void *entity)
{
    free(entity);
    return APR_SUCCESS;
}



apr_status_t apr_shm_name_get(apr_shmem_t *c, apr_shm_name_t **name)
{
    *name = NULL;
    return APR_ANONYMOUS;
}



apr_status_t apr_shm_name_set(apr_shmem_t *c, apr_shm_name_t *name)
{
    return APR_ANONYMOUS;
}



apr_status_t apr_shm_open(struct shmem_t *m)
{
    int rc;

    rc = DosGetSharedMem(m->memblock, PAG_READ|PAG_WRITE);

    if (rc)
        return APR_OS2_STATUS(rc);

    _uopen(m->heap);
    return APR_SUCCESS;
}



apr_status_t apr_shm_avail(struct shmem_t *c, apr_size_t *size)
{

    return APR_ENOTIMPL;
}