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src/os/unix/ngx_alloc.c - nginx-1.7.10

Global variables defined

Functions defined

Source code


  2. /*
  3. * Copyright (C) Igor Sysoev
  4. * Copyright (C) Nginx, Inc.
  5. */


  8. #include <ngx_config.h>
  9. #include <ngx_core.h>


  12. ‌ngx_uint_t  ngx_pagesize;
  13. ‌ngx_uint_t  ngx_pagesize_shift;
  14. ‌ngx_uint_t  ngx_cacheline_size;


  17. void *
  18. ‌ngx_alloc(size_t size, ngx_log_t *log)
  19. {
  20.     void  *p;

  22.     p = malloc(size);
  23.     if (p == NULL) {
  24.         ngx_log_error(NGX_LOG_EMERG, log, ngx_errno,
  25.                       "malloc(%uz) failed", size);
  26.     }

  28.     ngx_log_debug2(NGX_LOG_DEBUG_ALLOC, log, 0, "malloc: %p:%uz", p, size);

  30.     return p;
  31. }


  34. void *
  35. ‌ngx_calloc(size_t size, ngx_log_t *log)
  36. {
  37.     void  *p;

  39.     p = ngx_alloc(size, log);

  41.     if (p) {
  42.         ngx_memzero(p, size);
  43.     }

  45.     return p;
  46. }


  49. #if (NGX_HAVE_POSIX_MEMALIGN)

  51. void *
  52. ‌ngx_memalign(size_t alignment, size_t size, ngx_log_t *log)
  53. {
  54.     void  *p;
  55.     int    err;

  57.     err = posix_memalign(&p, alignment, size);

  59.     if (err) {
  60.         ngx_log_error(NGX_LOG_EMERG, log, err,
  61.                       "posix_memalign(%uz, %uz) failed", alignment, size);
  62.         p = NULL;
  63.     }

  65.     ngx_log_debug3(NGX_LOG_DEBUG_ALLOC, log, 0,
  66.                    "posix_memalign: %p:%uz @%uz", p, size, alignment);

  68.     return p;
  69. }

  71. #elif (NGX_HAVE_MEMALIGN)

  73. void *
  74. ‌ngx_memalign(size_t alignment, size_t size, ngx_log_t *log)
  75. {
  76.     void  *p;

  78.     p = memalign(alignment, size);
  79.     if (p == NULL) {
  80.         ngx_log_error(NGX_LOG_EMERG, log, ngx_errno,
  81.                       "memalign(%uz, %uz) failed", alignment, size);
  82.     }

  84.     ngx_log_debug3(NGX_LOG_DEBUG_ALLOC, log, 0,
  85.                    "memalign: %p:%uz @%uz", p, size, alignment);

  87.     return p;
  88. }

  90. #endif

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