Mercurial > dovecot > core-2.2

annotate src/lib/mempool-datastack.c @ 22664:fea53c2725c0

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director: Fix director_max_parallel_moves/kicks type Should be uint, not time.
author Timo Sirainen <timo.sirainen@dovecot.fi>
date Thu, 09 Nov 2017 12:24:16 +0200
parents 2e2563132d5f
children cb108f786fb4
Ignore whitespace changes - Everywhere: Within whitespace: At end of lines:
rev   line source
21390
2e2563132d5f Updated copyright notices to include the year 2017.
Stephan Bosch <stephan.bosch@dovecot.fi>
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1 /* Copyright (c) 2002-2017 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
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7 static const char *pool_data_stack_get_name(pool_t pool);
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8 static void pool_data_stack_ref(pool_t pool);
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9 static void pool_data_stack_unref(pool_t *pool);
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10 static void *pool_data_stack_malloc(pool_t pool, size_t size);
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11 static void pool_data_stack_free(pool_t pool, void *mem);
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12 static void *pool_data_stack_realloc(pool_t pool, void *mem,
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13 size_t old_size, size_t new_size);
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14 static void pool_data_stack_clear(pool_t pool);
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15 static size_t pool_data_stack_get_max_easy_alloc_size(pool_t pool);
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16
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17 static struct pool_vfuncs static_data_stack_pool_vfuncs = {
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18 pool_data_stack_get_name,
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19
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20 pool_data_stack_ref,
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21 pool_data_stack_unref,
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22
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23 pool_data_stack_malloc,
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24 pool_data_stack_free,
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25
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26 pool_data_stack_realloc,
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27
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28 pool_data_stack_clear,
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29 pool_data_stack_get_max_easy_alloc_size
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30 };
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31
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32 static const struct pool static_data_stack_pool = {
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33 .v = &static_data_stack_pool_vfuncs,
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34
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35 .alloconly_pool = TRUE,
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36 .datastack_pool = TRUE
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37 };
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38
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39 struct datastack_pool {
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40 struct pool pool;
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41 int refcount;
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42
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43 unsigned int data_stack_frame;
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44 };
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45
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46 pool_t pool_datastack_create(void)
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47 {
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48 struct datastack_pool *dpool;
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49
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50 dpool = t_new(struct datastack_pool, 1);
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51 dpool->pool = static_data_stack_pool;
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52 dpool->refcount = 1;
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53 dpool->data_stack_frame = data_stack_frame;
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54 return &dpool->pool;
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55 }
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56
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57 static const char *pool_data_stack_get_name(pool_t pool ATTR_UNUSED)
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58 {
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59 return "data stack";
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60 }
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61
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62 static void pool_data_stack_ref(pool_t pool)
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63 {
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64 struct datastack_pool *dpool = (struct datastack_pool *) pool;
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65
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66 if (unlikely(dpool->data_stack_frame != data_stack_frame))
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67 i_panic("pool_data_stack_ref(): stack frame changed");
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68
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69 dpool->refcount++;
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70 }
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71
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72 static void pool_data_stack_unref(pool_t *pool)
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73 {
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74 struct datastack_pool *dpool = (struct datastack_pool *)*pool;
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75
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76 if (unlikely(dpool->data_stack_frame != data_stack_frame))
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77 i_panic("pool_data_stack_unref(): stack frame changed");
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78
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79 dpool->refcount--;
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80 i_assert(dpool->refcount >= 0);
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81
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82 *pool = NULL;
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83 }
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84
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85 static void *pool_data_stack_malloc(pool_t pool ATTR_UNUSED, size_t size)
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86 {
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87 struct datastack_pool *dpool = (struct datastack_pool *) pool;
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88
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89 if (unlikely(size == 0 || size > SSIZE_T_MAX))
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90 i_panic("Trying to allocate %"PRIuSIZE_T" bytes", size);
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91
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92 if (unlikely(dpool->data_stack_frame != data_stack_frame))
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93 i_panic("pool_data_stack_malloc(): stack frame changed");
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94
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95 return t_malloc0(size);
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96 }
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97
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98 static void pool_data_stack_free(pool_t pool, void *mem ATTR_UNUSED)
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99 {
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100 struct datastack_pool *dpool = (struct datastack_pool *) pool;
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101
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102 if (unlikely(dpool->data_stack_frame != data_stack_frame))
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103 i_panic("pool_data_stack_free(): stack frame changed");
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104 }
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105
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106 static void *pool_data_stack_realloc(pool_t pool, void *mem,
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107 size_t old_size, size_t new_size)
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108 {
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109 struct datastack_pool *dpool = (struct datastack_pool *) pool;
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110 void *new_mem;
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111
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112 /* @UNSAFE */
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113 if (unlikely(new_size == 0 || new_size > SSIZE_T_MAX))
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114 i_panic("Trying to allocate %"PRIuSIZE_T" bytes", new_size);
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115
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116 if (unlikely(dpool->data_stack_frame != data_stack_frame))
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117 i_panic("pool_data_stack_realloc(): stack frame changed");
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118
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119 if (mem == NULL)
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120 return pool_data_stack_malloc(pool, new_size);
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121
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122 if (old_size >= new_size)
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123 return mem;
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124
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125 if (!t_try_realloc(mem, new_size)) {
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126 new_mem = t_malloc(new_size);
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127 memcpy(new_mem, mem, old_size);
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128 mem = new_mem;
404
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129 }
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130
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131 memset((char *) mem + old_size, 0, new_size - old_size);
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132 return mem;
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133 }
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134
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135 static void pool_data_stack_clear(pool_t pool ATTR_UNUSED)
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136 {
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137 }
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138
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139 static size_t
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140 pool_data_stack_get_max_easy_alloc_size(pool_t pool ATTR_UNUSED)
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141 {
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142 return t_get_bytes_available();
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143 }