Mercurial > dovecot > original-hg > dovecot-1.2

annotate src/lib/mempool-unsafe-datastack.c @ 8590:b9faf4db2a9f HEAD

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Updated copyright notices to include year 2009.
author Timo Sirainen <tss@iki.fi>
date Tue, 06 Jan 2009 09:25:38 -0500
parents 7ed926ed7aa4
children 00cd9aacd03c
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rev   line source
8590
b9faf4db2a9f Updated copyright notices to include year 2009.
Timo Sirainen <tss@iki.fi>
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1 /* Copyright (c) 2002-2009 Dovecot authors, see the included COPYING file */
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2
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3 #include "lib.h"
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4 #include "mempool.h"
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5
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6 #include <stdlib.h>
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7
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8 static const char *pool_unsafe_data_stack_get_name(pool_t pool);
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9 static void pool_unsafe_data_stack_ref(pool_t pool);
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10 static void pool_unsafe_data_stack_unref(pool_t *pool);
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11 static void *pool_unsafe_data_stack_malloc(pool_t pool, size_t size);
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12 static void pool_unsafe_data_stack_free(pool_t pool, void *mem);
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13 static void *pool_unsafe_data_stack_realloc(pool_t pool, void *mem,
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14 size_t old_size, size_t new_size);
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15 static void pool_unsafe_data_stack_clear(pool_t pool);
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16 static size_t pool_unsafe_data_stack_get_max_easy_alloc_size(pool_t pool);
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17
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18 static struct pool_vfuncs static_unsafe_data_stack_pool_vfuncs = {
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19 pool_unsafe_data_stack_get_name,
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20
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21 pool_unsafe_data_stack_ref,
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22 pool_unsafe_data_stack_unref,
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23
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24 pool_unsafe_data_stack_malloc,
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25 pool_unsafe_data_stack_free,
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26
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27 pool_unsafe_data_stack_realloc,
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28
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29 pool_unsafe_data_stack_clear,
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30 pool_unsafe_data_stack_get_max_easy_alloc_size
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31 };
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32
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33 static struct pool static_unsafe_data_stack_pool = {
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34 MEMBER(v) &static_unsafe_data_stack_pool_vfuncs,
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35
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36 MEMBER(alloconly_pool) TRUE,
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37 MEMBER(datastack_pool) TRUE
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38 };
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39
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40 pool_t unsafe_data_stack_pool = &static_unsafe_data_stack_pool;
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41
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42 static const char *pool_unsafe_data_stack_get_name(pool_t pool ATTR_UNUSED)
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43 {
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44 return "unsafe data stack";
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45 }
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46
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47 static void pool_unsafe_data_stack_ref(pool_t pool ATTR_UNUSED)
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48 {
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49 }
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50
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51 static void pool_unsafe_data_stack_unref(pool_t *pool ATTR_UNUSED)
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52 {
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53 }
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54
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55 static void *pool_unsafe_data_stack_malloc(pool_t pool ATTR_UNUSED,
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56 size_t size)
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57 {
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58 if (unlikely(size == 0 || size > SSIZE_T_MAX))
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59 i_panic("Trying to allocate %"PRIuSIZE_T" bytes", size);
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60
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61 return t_malloc0(size);
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62 }
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63
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64 static void pool_unsafe_data_stack_free(pool_t pool ATTR_UNUSED,
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65 void *mem ATTR_UNUSED)
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66 {
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67 }
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68
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69 static void *pool_unsafe_data_stack_realloc(pool_t pool ATTR_UNUSED,
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70 void *mem,
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71 size_t old_size, size_t new_size)
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72 {
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73 void *new_mem;
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74
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75 /* @UNSAFE */
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76 if (new_size == 0 || new_size > SSIZE_T_MAX)
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77 i_panic("Trying to allocate %"PRIuSIZE_T" bytes", new_size);
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78
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79 if (mem == NULL)
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80 return pool_unsafe_data_stack_malloc(pool, new_size);
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81
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82 if (old_size >= new_size)
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83 return mem;
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84
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85 if (!t_try_realloc(mem, new_size)) {
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86 new_mem = t_malloc(new_size);
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87 memcpy(new_mem, mem, old_size);
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88 mem = new_mem;
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89 }
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90
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91 memset((char *) mem + old_size, 0, new_size - old_size);
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92 return mem;
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93 }
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94
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95 static void pool_unsafe_data_stack_clear(pool_t pool ATTR_UNUSED)
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96 {
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97 }
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98
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99 static size_t
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100 pool_unsafe_data_stack_get_max_easy_alloc_size(pool_t pool ATTR_UNUSED)
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101 {
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102 return t_get_bytes_available();
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103 }