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comparison src/http/ngx_http_script.c @ 56:3050baa54a26 NGINX_0_1_28

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nginx 0.1.28 *) Bugfix: nginx hogs CPU while proxying the huge files. *) Bugfix: nginx could not be built by gcc 4.0 on Linux.
author Igor Sysoev <http://sysoev.ru>
date Fri, 08 Apr 2005 00:00:00 +0400
parents
children b55cbf18157e
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55:729de7d75018 56:3050baa54a26
1
2 /*
3 * Copyright (C) Igor Sysoev
4 */
5
6
7 #include <ngx_config.h>
8 #include <ngx_core.h>
9 #include <ngx_http.h>
10
11
12 ngx_int_t
13 ngx_http_script_compile_lite(ngx_conf_t *cf, ngx_array_t *sources,
14 ngx_array_t **lengths, ngx_array_t **values,
15 ngx_http_script_compile_lite_start_pt start,
16 ngx_http_script_compile_lite_end_pt end)
17 {
18 uintptr_t *code;
19 ngx_uint_t i;
20 ngx_table_elt_t *src;
21 ngx_http_variable_t *var;
22 ngx_http_script_var_code_t *var_code;
23
24 if (sources->nelts == 0) {
25 return NGX_OK;
26 }
27
28 if (*lengths == NULL) {
29 *lengths = ngx_array_create(cf->pool, 64, 1);
30 if (*lengths == NULL) {
31 return NGX_ERROR;
32 }
33 }
34
35 if (*values == NULL) {
36 *values = ngx_array_create(cf->pool, 256, 1);
37 if (*values == NULL) {
38 return NGX_ERROR;
39 }
40 }
41
42 src = sources->elts;
43 for (i = 0; i < sources->nelts; i++) {
44
45 if (src[i].value.data[0] == '$') {
46 if (start(&src[i], *lengths, *values, 0) != NGX_OK) {
47 return NGX_ERROR;
48 }
49
50 src[i].value.len--;
51 src[i].value.data++;
52
53 var = ngx_http_add_variable(cf, &src[i].value, 0);
54
55 if (var == NULL) {
56 return NGX_ERROR;
57 }
58
59 var_code = ngx_array_push_n(*lengths,
60 sizeof(ngx_http_script_var_code_t));
61 if (var_code == NULL) {
62 return NGX_ERROR;
63 }
64
65 var_code->code = (ngx_http_script_code_pt)
66 ngx_http_script_copy_var_len;
67 var_code->index = var->index;
68
69
70 var_code = ngx_array_push_n(*values,
71 sizeof(ngx_http_script_var_code_t));
72 if (var_code == NULL) {
73 return NGX_ERROR;
74 }
75
76 var_code->code = ngx_http_script_copy_var;
77 var_code->index = var->index;
78
79
80 if (end(*lengths, *values) != NGX_OK) {
81 return NGX_ERROR;
82 }
83
84 continue;
85 }
86
87 if (start(&src[i], *lengths, *values, 1) != NGX_OK) {
88 return NGX_ERROR;
89 }
90 }
91
92 code = ngx_array_push_n(*lengths, sizeof(uintptr_t));
93 if (code == NULL) {
94 return NGX_ERROR;
95 }
96
97 *code = (uintptr_t) NULL;
98
99 code = ngx_array_push_n(*values, sizeof(uintptr_t));
100 if (code == NULL) {
101 return NGX_ERROR;
102 }
103
104 *code = (uintptr_t) NULL;
105
106 return NGX_OK;
107 }
108
109
110 #if 0
111
112 static void *
113 ngx_http_script_start_code(ngx_pool_t *pool, ngx_array_t **codes, size_t size)
114 {
115 if (*codes == NULL) {
116 *codes = ngx_array_create(pool, 256, 1);
117 if (*codes == NULL) {
118 return NULL;
119 }
120 }
121
122 return ngx_array_push_n(*codes, size);
123 }
124
125 #endif
126
127
128 size_t
129 ngx_http_script_copy_len(ngx_http_script_engine_t *e)
130 {
131 ngx_http_script_copy_code_t *code;
132
133 code = (ngx_http_script_copy_code_t *) e->lite.ip;
134
135 e->lite.ip += sizeof(ngx_http_script_copy_code_t);
136
137 return code->len;
138 }
139
140
141 void
142 ngx_http_script_copy(ngx_http_script_engine_t *e)
143 {
144 ngx_http_script_copy_code_t *code;
145
146 code = (ngx_http_script_copy_code_t *) e->lite.ip;
147
148 e->lite.pos = ngx_cpymem(e->lite.pos,
149 e->lite.ip + sizeof(ngx_http_script_copy_code_t),
150 code->len);
151
152 e->lite.ip += sizeof(ngx_http_script_copy_code_t)
153 + ((code->len + sizeof(uintptr_t) - 1) & ~(sizeof(uintptr_t) - 1));
154 }
155
156
157 size_t
158 ngx_http_script_copy_var_len(ngx_http_script_engine_t *e)
159 {
160 ngx_http_variable_value_t *value;
161 ngx_http_script_var_code_t *code;
162
163 code = (ngx_http_script_var_code_t *) e->lite.ip;
164
165 e->lite.ip += sizeof(ngx_http_script_var_code_t);
166
167 value = ngx_http_get_indexed_variable(e->lite.request, code->index);
168
169 if (value == NULL || value == NGX_HTTP_VARIABLE_NOT_FOUND) {
170 return 0;
171 }
172
173 return value->text.len;
174 }
175
176
177 void
178 ngx_http_script_copy_var(ngx_http_script_engine_t *e)
179 {
180 ngx_http_variable_value_t *value;
181 ngx_http_script_var_code_t *code;
182
183 code = (ngx_http_script_var_code_t *) e->lite.ip;
184
185 e->lite.ip += sizeof(ngx_http_script_var_code_t);
186
187 value = ngx_http_get_indexed_variable(e->lite.request, code->index);
188
189 if (value == NULL || value == NGX_HTTP_VARIABLE_NOT_FOUND) {
190 return;
191 }
192
193 e->lite.pos = ngx_cpymem(e->lite.pos, value->text.data, value->text.len);
194 }