diff options
Diffstat (limited to 'external/libxml2_android/jni/libxml2/testOOMlib.c')
-rw-r--r-- | external/libxml2_android/jni/libxml2/testOOMlib.c | 269 |
1 files changed, 0 insertions, 269 deletions
diff --git a/external/libxml2_android/jni/libxml2/testOOMlib.c b/external/libxml2_android/jni/libxml2/testOOMlib.c deleted file mode 100644 index 34c4aa0a..00000000 --- a/external/libxml2_android/jni/libxml2/testOOMlib.c +++ /dev/null @@ -1,269 +0,0 @@ -/* - * testOOM.c: Test out-of-memory handling - * - * See Copyright for the status of this software. - * - * Copyright 2003 Red Hat, Inc. - * Written by: hp@redhat.com - */ - -#include "testOOMlib.h" - -#ifdef HAVE_STDLIB_H -#include <stdlib.h> -#endif - -#include <string.h> - -#define _TEST_INT_MAX 2147483647 -#ifndef TRUE -#define TRUE (1) -#endif -#ifndef FALSE -#define FALSE (0) -#endif -#ifndef NULL -#define NULL ((void*)0) -#endif - -#include <libxml/xmlmemory.h> - -static int fail_alloc_counter = _TEST_INT_MAX; -static int n_failures_per_failure = 1; -static int n_failures_this_failure = 0; -static int n_blocks_outstanding = 0; - -/** - * set_fail_alloc_counter: - * @until_next_fail: number of successful allocs before one fails - * - * Sets the number of allocations until we simulate a failed - * allocation. If set to 0, the next allocation to run - * fails; if set to 1, one succeeds then the next fails; etc. - * Set to _TEST_INT_MAX to not fail anything. - */ -static void -set_fail_alloc_counter (int until_next_fail) -{ - fail_alloc_counter = until_next_fail; -} - -/** - * get_fail_alloc_counter: - * - * Returns the number of successful allocs until we'll simulate - * a failed alloc. - */ -static int -get_fail_alloc_counter (void) -{ - return fail_alloc_counter; -} - -/** - * set_fail_alloc_failures: - * @failures_per_failure: number to fail - * - * Sets how many mallocs to fail when the fail alloc counter reaches - * 0. - * - */ -static void -set_fail_alloc_failures (int failures_per_failure) -{ - n_failures_per_failure = failures_per_failure; -} - -/** - * decrement_fail_alloc_counter: - * - * Called when about to alloc some memory; if - * it returns #TRUE, then the allocation should - * fail. If it returns #FALSE, then the allocation - * should not fail. - * - * returns #TRUE if this alloc should fail - */ -static int -decrement_fail_alloc_counter (void) -{ - if (fail_alloc_counter <= 0) - { - n_failures_this_failure += 1; - if (n_failures_this_failure >= n_failures_per_failure) - { - fail_alloc_counter = _TEST_INT_MAX; - - n_failures_this_failure = 0; - } - - return TRUE; - } - else - { - fail_alloc_counter -= 1; - return FALSE; - } -} - -/** - * test_get_malloc_blocks_outstanding: - * - * Get the number of outstanding malloc()'d blocks. - * - * Returns number of blocks - */ -int -test_get_malloc_blocks_outstanding (void) -{ - return n_blocks_outstanding; -} - -void* -test_malloc (size_t bytes) -{ - if (decrement_fail_alloc_counter ()) - { - /* FAIL the malloc */ - return NULL; - } - - if (bytes == 0) /* some system mallocs handle this, some don't */ - return NULL; - else - { - void *mem; - mem = xmlMemMalloc (bytes); - - if (mem) - n_blocks_outstanding += 1; - - return mem; - } -} - -void* -test_realloc (void *memory, - size_t bytes) -{ - if (decrement_fail_alloc_counter ()) - { - /* FAIL */ - return NULL; - } - - if (bytes == 0) /* guarantee this is safe */ - { - test_free (memory); - return NULL; - } - else - { - void *mem; - mem = xmlMemRealloc (memory, bytes); - - if (memory == NULL && mem != NULL) - n_blocks_outstanding += 1; - - return mem; - } -} - -void -test_free (void *memory) -{ - if (memory) /* we guarantee it's safe to free (NULL) */ - { - n_blocks_outstanding -= 1; - - xmlMemFree (memory); - } -} - -char* -test_strdup (const char *str) -{ - int len; - char *copy; - - if (str == NULL) - return NULL; - - len = strlen (str); - - copy = test_malloc (len + 1); - if (copy == NULL) - return NULL; - - memcpy (copy, str, len + 1); - - return copy; -} - -static int -run_failing_each_malloc (int n_mallocs, - TestMemoryFunction func, - void *data) -{ - n_mallocs += 10; /* fudge factor to ensure reallocs etc. are covered */ - - while (n_mallocs >= 0) - { - set_fail_alloc_counter (n_mallocs); - - if (!(* func) (data)) - return FALSE; - - n_mallocs -= 1; - } - - set_fail_alloc_counter (_TEST_INT_MAX); - - return TRUE; -} - -/** - * test_oom_handling: - * @func: function to call - * @data: data to pass to function - * - * Tests how well the given function responds to out-of-memory - * situations. Calls the function repeatedly, failing a different - * call to malloc() each time. If the function ever returns #FALSE, - * the test fails. The function should return #TRUE whenever something - * valid (such as returning an error, or succeeding) occurs, and #FALSE - * if it gets confused in some way. - * - * Returns #TRUE if the function never returns FALSE - */ -int -test_oom_handling (TestMemoryFunction func, - void *data) -{ - int approx_mallocs; - - /* Run once to see about how many mallocs are involved */ - - set_fail_alloc_counter (_TEST_INT_MAX); - - if (!(* func) (data)) - return FALSE; - - approx_mallocs = _TEST_INT_MAX - get_fail_alloc_counter (); - - set_fail_alloc_failures (1); - if (!run_failing_each_malloc (approx_mallocs, func, data)) - return FALSE; - - set_fail_alloc_failures (2); - if (!run_failing_each_malloc (approx_mallocs, func, data)) - return FALSE; - - set_fail_alloc_failures (3); - if (!run_failing_each_malloc (approx_mallocs, func, data)) - return FALSE; - - set_fail_alloc_counter (_TEST_INT_MAX); - - return TRUE; -} |