Mercurial > cpython-lru_cache-weakref

annotate Modules/_testembed.c @ 87690:66c1c9f32567 default tip

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Add use_weakref option to functools.lru_cache The use_weakref option makes lru_cache create weak references to the function arguments when creating the cache key, which prevents them from staying in the memory forever even after all other references to them are gone. This is a proof of concept for http://bugs.python.org/issue19859
author Radomir Dopieralski <devel@sheep.art.pl>
date Tue, 03 Dec 2013 16:02:48 +0100
parents 9cd88b39ef62
children
Ignore whitespace changes - Everywhere: Within whitespace: At end of lines:
rev   line source
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1 #include <Python.h>
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2 #include <stdio.h>
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3
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4 /*********************************************************
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5 * Embedded interpreter tests that need a custom exe
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6 *
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7 * Executed via 'EmbeddingTests' in Lib/test/test_capi.py
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8 *********************************************************/
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9
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10 static void _testembed_Py_Initialize(void)
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11 {
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12 /* HACK: the "./" at front avoids a search along the PATH in
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13 Modules/getpath.c */
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14 Py_SetProgramName(L"./_testembed");
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15 Py_Initialize();
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16 }
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17
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18
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19 /*****************************************************
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20 * Test repeated initalisation and subinterpreters
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21 *****************************************************/
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22
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23 static void print_subinterp(void)
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24 {
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25 /* Just output some debug stuff */
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26 PyThreadState *ts = PyThreadState_Get();
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27 printf("interp %p, thread state %p: ", ts->interp, ts);
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28 fflush(stdout);
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29 PyRun_SimpleString(
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30 "import sys;"
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31 "print('id(modules) =', id(sys.modules));"
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32 "sys.stdout.flush()"
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33 );
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34 }
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35
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36 static void test_repeated_init_and_subinterpreters(void)
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37 {
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38 PyThreadState *mainstate, *substate;
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39 #ifdef WITH_THREAD
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40 PyGILState_STATE gilstate;
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41 #endif
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42 int i, j;
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43
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44 for (i=0; i<3; i++) {
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45 printf("--- Pass %d ---\n", i);
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46 _testembed_Py_Initialize();
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47 mainstate = PyThreadState_Get();
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48
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49 #ifdef WITH_THREAD
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50 PyEval_InitThreads();
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51 PyEval_ReleaseThread(mainstate);
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52
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53 gilstate = PyGILState_Ensure();
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54 #endif
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55 print_subinterp();
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56 PyThreadState_Swap(NULL);
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57
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58 for (j=0; j<3; j++) {
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59 substate = Py_NewInterpreter();
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60 print_subinterp();
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61 Py_EndInterpreter(substate);
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62 }
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63
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64 PyThreadState_Swap(mainstate);
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65 print_subinterp();
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66 #ifdef WITH_THREAD
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67 PyGILState_Release(gilstate);
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68 #endif
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69
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70 PyEval_RestoreThread(mainstate);
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71 Py_Finalize();
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72 }
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73 }
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74
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75 /*****************************************************
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76 * Test forcing a particular IO encoding
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77 *****************************************************/
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78
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79 static void check_stdio_details(const char *encoding, const char * errors)
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80 {
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81 /* Output info for the test case to check */
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82 if (encoding) {
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83 printf("Expected encoding: %s\n", encoding);
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84 } else {
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85 printf("Expected encoding: default\n");
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86 }
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87 if (errors) {
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88 printf("Expected errors: %s\n", errors);
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89 } else {
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90 printf("Expected errors: default\n");
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91 }
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92 fflush(stdout);
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93 /* Force the given IO encoding */
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94 Py_SetStandardStreamEncoding(encoding, errors);
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95 _testembed_Py_Initialize();
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96 PyRun_SimpleString(
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97 "import sys;"
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98 "print('stdin: {0.encoding}:{0.errors}'.format(sys.stdin));"
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99 "print('stdout: {0.encoding}:{0.errors}'.format(sys.stdout));"
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100 "print('stderr: {0.encoding}:{0.errors}'.format(sys.stderr));"
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101 "sys.stdout.flush()"
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102 );
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103 Py_Finalize();
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104 }
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105
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106 static void test_forced_io_encoding(void)
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107 {
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108 /* Check various combinations */
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109 printf("--- Use defaults ---\n");
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110 check_stdio_details(NULL, NULL);
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111 printf("--- Set errors only ---\n");
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112 check_stdio_details(NULL, "surrogateescape");
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113 printf("--- Set encoding only ---\n");
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114 check_stdio_details("latin-1", NULL);
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115 printf("--- Set encoding and errors ---\n");
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116 check_stdio_details("latin-1", "surrogateescape");
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117
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118 /* Check calling after initialization fails */
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119 Py_Initialize();
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120
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121 if (Py_SetStandardStreamEncoding(NULL, NULL) == 0) {
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122 printf("Unexpected success calling Py_SetStandardStreamEncoding");
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123 }
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124 Py_Finalize();
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125 }
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126
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127 /* Different embedding tests */
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128 int main(int argc, char *argv[])
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129 {
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130
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131 /* TODO: Check the argument string to allow for more test cases */
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132 if (argc > 1) {
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133 /* For now: assume "forced_io_encoding */
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134 test_forced_io_encoding();
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135 } else {
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136 /* Run the original embedding test case by default */
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137 test_repeated_init_and_subinterpreters();
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138 }
69553
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139 return 0;
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140 }