1 /* Copyright (C) 2008 The Android Open Source Project
2 **
3 ** This software is licensed under the terms of the GNU General Public
4 ** License version 2, as published by the Free Software Foundation, and
5 ** may be copied, distributed, and modified under those terms.
6 **
7 ** This program is distributed in the hope that it will be useful,
8 ** but WITHOUT ANY WARRANTY; without even the implied warranty of
9 ** MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
10 ** GNU General Public License for more details.
11 */
12 #include "android/utils/system.h"
13 #include "android/utils/assert.h"
14 #include <stdlib.h>
15 #include <stdio.h>
16 #ifdef _WIN32
17 # define WIN32_LEAN_AND_MEAN
18 # include <windows.h> /* for Sleep */
19 #else
20 # include <unistd.h> /* for usleep */
21 #endif
22
23 void*
android_alloc(size_t size)24 android_alloc( size_t size )
25 {
26 void* block;
27
28 if (size == 0)
29 return NULL;
30
31 block = malloc(size);
32 if (block != NULL)
33 return block;
34
35 fprintf(stderr, "PANIC: not enough memory\n");
36 exit(1);
37 return NULL;
38 }
39
40 void*
android_alloc0(size_t size)41 android_alloc0( size_t size )
42 {
43 void* block;
44
45 if (size == 0)
46 return NULL;
47
48 block = calloc(1, size);
49 if (block != NULL)
50 return block;
51
52 fprintf(stderr, "PANIC: not enough memory\n");
53 exit(1);
54 return NULL;
55 }
56
57 void*
android_realloc(void * block,size_t size)58 android_realloc( void* block, size_t size )
59 {
60 void* block2;
61
62 if (size == 0) {
63 free(block);
64 return NULL;
65 }
66 block2 = realloc(block, size);
67 if (block2 != NULL)
68 return block2;
69
70 fprintf(stderr, "PANIC: not enough memory to reallocate %zu bytes\n", size);
71 exit(1);
72 return NULL;
73 }
74
75 void
android_free(void * block)76 android_free( void* block )
77 {
78 if (block)
79 free(block);
80 }
81
82 void*
_android_array_alloc(size_t itemSize,size_t count)83 _android_array_alloc( size_t itemSize, size_t count )
84 {
85 #if ACONFIG_USE_ASSERT
86 size_t maxSize;
87
88 if (itemSize == 0)
89 AASSERT_FAIL("item size is 0\n");
90
91 maxSize = (~(size_t)0) / itemSize;
92 if (count > maxSize)
93 AASSERT_FAIL("allocation too large (%d > %d)\n", count, maxSize);
94 #endif
95 return android_alloc(itemSize * count);
96 }
97
98 void*
_android_array_alloc0(size_t itemSize,size_t count)99 _android_array_alloc0( size_t itemSize, size_t count )
100 {
101 void* block = _android_array_alloc(itemSize, count);
102 memset(block, 0, itemSize*count);
103 return block;
104 }
105
106 void*
_android_array_realloc(void * block,size_t itemSize,size_t count)107 _android_array_realloc( void* block, size_t itemSize, size_t count )
108 {
109 #if ACONFIG_USE_ASSERT
110 size_t maxSize;
111
112 if (itemSize == 0)
113 AASSERT_FAIL("item size is 0\n");
114
115 maxSize = (~(size_t)0) / itemSize;
116 if (count > maxSize)
117 AASSERT_FAIL("reallocation of %d-bytes array too large (%d > %d)\n",
118 itemSize, count, maxSize);
119 #endif
120 return android_realloc(block, itemSize*count);
121 }
122
123 char*
android_strdup(const char * str)124 android_strdup( const char* str )
125 {
126 int len;
127 char* copy;
128
129 if (str == NULL)
130 return NULL;
131
132 len = strlen(str);
133 copy = malloc(len+1);
134 memcpy(copy, str, len);
135 copy[len] = 0;
136
137 return copy;
138 }
139
140 #ifdef _WIN32
141 char*
win32_strsep(char ** pline,const char * delim)142 win32_strsep(char** pline, const char* delim)
143 {
144 char* line = *pline;
145 char* p = line;
146
147 if (p == NULL)
148 return NULL;
149
150 for (;;) {
151 int c = *p++;
152 const char* q = delim;
153
154 if (c == 0) {
155 p = NULL;
156 break;
157 }
158
159 while (*q) {
160 if (*q == c) {
161 p[-1] = 0;
162 goto Exit;
163 }
164 q++;
165 }
166 }
167 Exit:
168 *pline = p;
169 return line;
170 }
171 #endif
172
173
174 void
disable_sigalrm(signal_state_t * state)175 disable_sigalrm( signal_state_t *state )
176 {
177 #ifdef _WIN32
178 (void)state;
179 #else
180 sigset_t set;
181
182 sigemptyset(&set);
183 sigaddset(&set, SIGALRM);
184 pthread_sigmask (SIG_BLOCK, &set, &state->old);
185 #endif
186 }
187
188 void
restore_sigalrm(signal_state_t * state)189 restore_sigalrm( signal_state_t *state )
190 {
191 #ifdef _WIN32
192 (void)state;
193 #else
194 pthread_sigmask (SIG_SETMASK, &state->old, NULL);
195 #endif
196 }
197
198 void
sleep_ms(int timeout_ms)199 sleep_ms( int timeout_ms )
200 {
201 #ifdef _WIN32
202 if (timeout_ms <= 0)
203 return;
204
205 Sleep( timeout_ms );
206 #else
207 if (timeout_ms <= 0)
208 return;
209
210 BEGIN_NOSIGALRM
211 usleep( timeout_ms*1000 );
212 END_NOSIGALRM
213 #endif
214 }
215