kore load 模块的一些功能

load        ./memtag.so init

#include <kore/kore.h>

#include <kore/http.h>

/*

 * This example demonstrates how dynamically reloadable modules

 * can use the memory tagging system in Kore in order to restore

 * the global pointers in the module.

 */

/* Some unique value. */

#define MEM_TAG_HELLO        100

int        init(int);

int        page(struct http_request *);

/* Global pointer, gets initialized to NULL when module loads/reloads. */

char        *fixed_ptr = NULL;

// 属于标准的签名格式

int

init(int state)

{

    /* Ignore unload(s). */

    if (state == KORE_MODULE_UNLOAD)

        return (KORE_RESULT_OK);

    printf("fixed_ptr: %p\n", (void *)fixed_ptr);

    /* Attempt to lookup the original pointer. */

    if ((fixed_ptr = kore_mem_lookup(MEM_TAG_HELLO)) == NULL) {

        /* Failed, grab a new chunk of memory and tag it. */

        printf("  allocating fixed_ptr for the first time\n");

        fixed_ptr = kore_malloc_tagged(6, MEM_TAG_HELLO);

        kore_strlcpy(fixed_ptr, "hello", 6);

    } else {

        printf("  fixed_ptr address resolved\n");

    }

    printf("  fixed_ptr: %p\n", (void *)fixed_ptr);

    printf("  value    : %s\n", fixed_ptr);

    return (KORE_RESULT_OK);

}

int

page(struct http_request *req)

{

    http_response(req, 200, fixed_ptr, strlen(fixed_ptr));

    return (KORE_RESULT_OK);

}

static int

configure_load(char *options)

{

    char        *argv[3];

    kore_split_string(options, " ", argv, 3);

    if (argv[0] == NULL)

        return (KORE_RESULT_ERROR);

    // 此处会构建kore 的模块,特别类似nginx 的module

    kore_module_load(argv[0], argv[1], KORE_MODULE_NATIVE);

    return (KORE_RESULT_OK);

}