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--- /dev/null
+++ libmalloc/libmalloc-67.40.1/src/tests/stress_test.c
@@ -0,0 +1,574 @@
+/*
+ * malloc_stress: Stress the heck out of malloc(), and do a lot of
+ * sanity checks that the malloc()'ed buffers are legit.
+ *
+ * usage: malloc_stress [options...]
+ *
+ * Default: Do random-sized malloc() calls until malloc() returns NULL
+ * or some signal kills the process.
+ * Randomly do a free() 10% of the time.
+ *
+ * Options:
+ * -min #bytes malloc() at least #bytes per malloc() call.
+ * -max #bytes malloc() no more than #byte per malloc() call.
+ * -mem #bytes Stop when #bytes has been allocated.
+ * -calls # Stop when #calls to malloc() have been executed.
+ * -time #sec Stop if the number of seconds has elapsed.
+ * -seed # Set the random seed to #.
+ * -free % Randomly free() some % of the time.
+ * -dbg Dump internal structures (could be voluminous!)
+ *
+ * Exits with status code:
+ * 0 PASS
+ * 1 FAIL (plus lots of stdout output)
+ * 99 Illegal arguments or internal error.
+ */
+
+#include <stdio.h>
+#include <unistd.h>
+#include <stdlib.h>
+#include <string.h>
+#include <time.h>
+#include <errno.h>
+
+/* globals */
+int rseed; /* initial random seed value */
+int min_bytes; /* minimum bytes to malloc */
+int max_bytes; /* maximum bytes to malloc */
+
+long long max_mem; /* maximum total memory to allocate */
+long long mem_allocated; /* memory allocated so far */
+
+int free_pct; /* call free() this pct of the time */
+
+int max_malloc_calls; /* Maximum number of malloc() calls to make */
+int malloc_calls_made; /* Actual count of malloc()'s done */
+int malloc_bufs; /* # of active malloc()'ed buffers (calls - freed) */
+
+int time_limit; /* How many seconds should this program run? */
+
+int debug_dump; /* Set to 1 to dump internal structures */
+
+
+/* Array size for remembering malloc info */
+#define MAX_MALLOC_INFO 10000000 /* 10 million */
+
+/* Remember significant info of each malloc() done. */
+struct malloc_info
+{
+ void *buf_ptr; /* the ptr returned by malloc() */
+ int buf_size; /* count of bytes allocated */
+ int set_val; /* the value the buffer was set to */
+ int this_buffer_freed; /* has this buffer been free()'d? */
+} minfo_array[MAX_MALLOC_INFO];
+
+
+
+/* Generate a random percentage (1-100) */
+#define D100 (1+(rand() % 100))
+
+
+int signal_happened = 0; /* gets set to signal# if one happens */
+
+void sig_handler(int signo)
+{
+ signal_happened = signo;
+ return;
+}
+
+void trap_signals()
+{
+ int signum;
+ for (signum = 1; signum <= NSIG ; signum++) {
+ if (signal(signum, sig_handler) == SIG_ERR) {
+ printf("INFO: Could not trap signal %d (OK)\n",signum);
+ };
+ }
+}
+
+
+/* Display a brief usage message and exit with status 99 */
+void usage()
+{
+ printf("\nusage: malloc_stress [options...]\n");
+ printf("Default: Allocate up to %d buffers, with a %d percent free() chance.\n",MAX_MALLOC_INFO,free_pct);
+ printf(" Buffer sizes range from %d to %d bytes.\n",min_bytes, max_bytes);
+ printf("\nOptions:\n");
+ printf(" -min #bytes Minimum buffer size to allocate (at least 1).\n");
+ printf(" -max #bytes Maximum buffer size (up to 2gb allowed).\n");
+ printf(" -mem #bytes Stop when total allocations surpasses this.\n");
+ printf(" -free # Percent chance to free a buffer.\n");
+ printf(" -calls # Maximum allocations to do, then stop.\n");
+ printf(" -seed # Set the random seed to this number.\n");
+ printf(" -dbg Produce some debugging outputs.\n");
+ exit(99);
+}
+
+
+/*
+ * summarize(): Give a brief synopsis of the number of malloc() calls made,
+ * free() calls made, total memory allocated.
+ */
+void summarize()
+{
+ int mx;
+
+ printf("INFO: %d total malloc() calls made.\n",malloc_calls_made);
+ printf("INFO: %d total free() calls made during testing.\n",
+ malloc_calls_made - malloc_bufs);
+ printf("INFO: Total memory allocated: %lld bytes\n", mem_allocated);
+
+ if (debug_dump) {
+ for (mx=0; mx<malloc_calls_made; mx++) {
+ printf("Buffer index %d: Address = 0x%llx, Size=%d, Fill=%d ",
+ mx, (unsigned long long)(minfo_array[mx].buf_ptr),
+ minfo_array[mx].buf_size, minfo_array[mx].set_val);
+ if (minfo_array[mx].this_buffer_freed)
+ printf("[freed]");
+ printf("\n");
+ }
+ }
+ printf("INFO: Random seed value = %d\n", rseed);
+
+ return;
+}
+
+
+
+/*
+ * When we hit an end condition, every allocated buffer should be free()-able.
+ */
+void cleanup()
+{
+
+ int mx;
+ printf("Cleanup: Started.\n");
+
+ printf("Cleanup: Every allocated buffer should be free-able.\n");
+ for (mx=0; mx < malloc_calls_made; mx++) {
+ if (!(minfo_array[mx].this_buffer_freed)) {
+ free(minfo_array[mx].buf_ptr);
+ if (signal_happened) {
+ printf("FAIL: Signal %d occurred during free(0x%llx)\n",
+ signal_happened, (unsigned long long)(minfo_array[mx].buf_ptr));
+ exit(1);
+ }
+ }
+ }
+ return;
+}
+
+
+/*
+ * Take a ptr and size, and another ptr and size, and verify they do not
+ * overlap. Return 0 if they are disjoint, or 1 if they overlap.
+ */
+int check_overlap(void *p1, int len1, void *p2, int len2)
+{
+ unsigned long long bob1, eob1, bob2, eob2;
+
+ /* make begin and end ptrs in an integer form for easier comparison */
+ bob1 = (unsigned long long)p1;
+ eob1 = bob1 + (unsigned long long)len1 - 1LL;
+
+ bob2 = (unsigned long long)p2;
+ eob2 = bob2 + (unsigned long long)len2 - 1LL;
+
+ /*
+ * The begin and end points of one buffer should not be contained
+ * between the begin and end points of the other buffer.
+ */
+ if ( (bob1 >= bob2 && bob1 <= eob2) ||
+ (eob1 >= bob2 && eob1 <= eob2) ||
+ (bob2 >= bob1 && bob2 <= eob1) ||
+ (eob2 >= bob1 && eob2 <= eob1) ) {
+ printf("FAIL: Buffers overlap: Buffer 1 (0x%llx, %d bytes), Buffer 2 (0x%llx, %d bytes)\n", bob1, len1, bob2, len2);
+ return 1; /* Indicate buffers overlap */
+
+ }
+
+ return 0; /* buffers do not overlap */
+}
+
+
+int main (int argc, char *argv[])
+{
+
+ int argx;
+
+ malloc_calls_made = malloc_bufs = 0;
+ mem_allocated = 0;
+
+ /* Set defaults */
+ rseed = time(0);
+ min_bytes = 1;
+ max_bytes = (1024 * 1024); /* 1mb */
+ max_mem = 0; /* Continue until malloc() returns NULL */
+ free_pct = 10; /* Do a free() 10% of the time */
+ max_malloc_calls = MAX_MALLOC_INFO; /* no larger than our array */
+
+ time_limit = 0;
+ time_t start_time;
+
+ debug_dump = 0;
+
+ /*
+ * Process arguments.
+ */
+ for (argx=1; argx<argc; argx++) {
+
+ if (strcmp("-min",argv[argx]) == 0) {
+ min_bytes = atoi(argv[++argx]);
+
+ } else if (strcmp("-max",argv[argx]) == 0) {
+ max_bytes = atoi(argv[++argx]);
+
+ } else if (strcmp("-mem",argv[argx]) == 0) {
+ max_mem = atoll(argv[++argx]);
+
+ } else if (strcmp("-seed",argv[argx]) == 0) {
+ rseed = atoi(argv[++argx]);
+
+ } else if (strcmp("-free",argv[argx]) == 0) {
+ free_pct = atoi(argv[++argx]);
+
+ } else if (strcmp("-calls",argv[argx]) == 0) {
+ max_malloc_calls = atoi(argv[++argx]);
+
+ } else if (strcmp("-time", argv[argx]) == 0) {
+ time_limit = atoi(argv[++argx]);
+
+ } else if (strcmp("-dbg",argv[argx]) == 0) {
+ debug_dump = 1;
+
+ } else if (strcmp("-h",argv[argx]) == 0) {
+ usage();
+
+ } else {
+ printf("Unknown argument: '%s'\n",argv[argx]);
+ usage();
+ }
+
+ }
+
+ /* Sanity check the arguments */
+
+ if (min_bytes < 1) {
+ printf("Minimum bytes (-min %d) must be at least 1.\n",min_bytes);
+ usage();
+ }
+
+ if (max_bytes < 1) {
+ printf("Maximum bytes (-max %d) must be at least 1.\n",max_bytes);
+ usage();
+ }
+
+ if (min_bytes > max_bytes) {
+ printf("Minimum bytes (-min %d) must not exceed max bytes (-max %d)\n",
+ min_bytes,max_bytes);
+ usage();
+ }
+
+ if (free_pct < 0 || free_pct > 100) {
+ printf("Percentage to free (-free %d) must be between 0 and 100.\n",
+ free_pct);
+ usage();
+ }
+
+ if (max_malloc_calls < 1) {
+ printf("Maximum malloc calls (-calls %d) must be at least 1.\n",
+ max_malloc_calls);
+ usage();
+ }
+
+ if (max_malloc_calls > MAX_MALLOC_INFO) {
+ printf("This program has been compiled for %d max allocations.\n",
+ MAX_MALLOC_INFO);
+ printf("To support more, re-compile malloc_stress.c with a larger MAX_MALLOC_INFO\n");
+ usage();
+ }
+
+ if (time_limit < 0) {
+ printf("The maximum execution time specified (%d seconds) must be 0 or positive.\n", time_limit);
+ usage();
+ }
+
+
+
+ /* Trap all signals that are possible to trap */
+ trap_signals();
+
+
+ /* Describe our inputs and actions to be taken */
+ if (max_malloc_calls) {
+ printf("Will call malloc() up to %d times.\n",max_malloc_calls);
+ } else {
+ printf("Will call malloc() repeatedly until it returns NULL.\n");
+ }
+
+ if (min_bytes == max_bytes) {
+ printf("Will allocate buffers all of size %d bytes.\n",min_bytes);
+ } else {
+ printf("Will allocate buffers between %d and %d bytes.\n",
+ min_bytes, max_bytes);
+ }
+
+ if (free_pct) {
+ printf("Will free() a malloc'ed buffer %d%% of the time.\n",free_pct);
+ } else {
+ printf("free() will NOT be called between malloc's.\n");
+ }
+
+ if (time_limit > 0) {
+ printf("Will stop after %d elapsed seconds.\n", time_limit);
+ }
+
+ srand(rseed);
+ printf("Random seed value = %d\n",rseed);
+ fflush(stdout);
+
+ start_time = time(0);
+
+ /*
+ * Loop until we have some reason to quit.
+ */
+ for (;;) {
+
+ int buf_size;
+ int bx;
+ char *malloc_buf;
+ int set_buf_val;
+ int save_errno;
+
+ /* Have we exceeded our execution time limit? */
+ if (time_limit > 0 && (time(0) - start_time >= time_limit)) {
+ printf("INFO: Execution time limit has been reached.\n");
+ summarize();
+ cleanup();
+ printf("PASS\n");
+ exit(0);
+ }
+
+ /* Is this a good time to free() a buffer? */
+ if (malloc_bufs > 0 && (D100 < free_pct)) {
+ /* Choose a random malloc'd buffer to free up */
+ int random_buf;
+
+ /* Find a currently allocated buffer to free */
+ for (;;) {
+ random_buf = rand() % malloc_calls_made;
+ if (!(minfo_array[random_buf].this_buffer_freed)) {
+ free(minfo_array[random_buf].buf_ptr);
+ /* If a signal happened, Fail */
+ if (signal_happened) {
+ summarize();
+ printf("FAIL: Signal %d caught during free() of buffer 0x%llx\n",
+ signal_happened, (unsigned long long)(minfo_array[random_buf].buf_ptr));
+ exit(1);
+ }
+
+ minfo_array[random_buf].this_buffer_freed = 1;
+ malloc_bufs--; /* decrease the count of allocated bufs */
+
+ if (debug_dump) {
+ printf("INFO: Freed buffer index %d, (%d bytes) at address 0x%llx\n",
+ random_buf, minfo_array[random_buf].buf_size,
+ (unsigned long long)(minfo_array[random_buf].buf_ptr));
+ }
+
+ break;
+ }
+ }
+ continue;
+ }
+
+ /* Else it is a good time to malloc() a buffer */
+ buf_size = min_bytes + (rand() % (max_bytes - min_bytes + 1));
+ errno = 0;
+ malloc_buf = malloc(buf_size);
+ save_errno = errno;
+
+ /* If a signal was caught, summarize and FAIL */
+ if (signal_happened) {
+ summarize();
+ printf("FAIL: Signal %d caught during malloc()!\n",signal_happened);
+ printf("Buffer size being allocated was %d bytes.\n",buf_size);
+ exit(1);
+ }
+
+ if (debug_dump) {
+ printf("INFO: Allocated buffer (%d bytes) at address 0x%llx\n",
+ buf_size, (unsigned long long)malloc_buf);
+ }
+
+ /* Did the malloc() succeed? */
+ if (malloc_buf == NULL) {
+ /* malloc() returned NULL; make sure it was due to ENOMEM */
+ if (save_errno != ENOMEM) {
+ printf("FAIL: malloc failed, but with errno = %d instead of ENOMEM.\n",save_errno);
+ summarize();
+ exit(1);
+ }
+ summarize();
+ cleanup(); /* Every malloc()'d buffer should be free()-able */
+ printf("PASS\n");
+ exit(0);
+ }
+
+
+ /*
+ * Sanity check that this buffer does not overlap with any other
+ * buffer we have previously allocated. NOTE: Be sure to
+ * skip minfo_array elements which have been free()'d previously.
+ */
+ for (bx=0; bx<malloc_calls_made; bx++) {
+
+ /* Skip to the next if this buffer was free()'d before */
+ if (minfo_array[bx].this_buffer_freed)
+ continue;
+
+ /*
+ * The new buffer should not overlap with any other buffer.
+ */
+ if (check_overlap(malloc_buf, buf_size,
+ minfo_array[bx].buf_ptr, minfo_array[bx].buf_size)) {
+ summarize();
+ printf("FAIL: Allocated buffer overlaps with buffer index %d\n",bx);
+ exit(1);
+ }
+ }
+
+
+ /*
+ * Verify that we can read the bytes of the buffer.
+ * Note that malloc() does not (have to) initialize the buffer.
+ * If any signal occurs while reading, FAIL.
+ */
+ for (bx=0; bx < buf_size; bx++) {
+ char byte = malloc_buf[bx];
+ if (signal_happened) {
+ summarize();
+ printf("FAIL: Signal %d caught reading buffer!\n",signal_happened);
+ exit(1);
+ }
+ }
+
+ /*
+ * One malloc() requirement is that the buffer should be aligned
+ * such that any numeric type can be stored using the base address,
+ * assuming the buffer is large enough to hold that numeric type.
+ * If the buffer is not well-aligned we might get a signal like
+ * SIGSEGV (segmentation violation) or SIGBUS.
+ * Be sure to do this test BEFORE the memset() operation below.
+ */
+ if (sizeof(short) <= buf_size) {
+ *((short *)malloc_buf) = 1;
+ }
+
+ if (sizeof(int) <= buf_size) {
+ *((int *)malloc_buf) = 2;
+ }
+
+ if (sizeof(long) <= buf_size) {
+ *((long *)malloc_buf) = 3L;
+ }
+
+ if (sizeof(long long) <= buf_size) {
+ *((long long *)malloc_buf) = 4LL;
+ }
+
+ if (sizeof(float) <= buf_size) {
+ *((float *)malloc_buf) = 5.0;
+ }
+
+ if (sizeof(double) <= buf_size) {
+ *((double *)malloc_buf) = 6.1;
+ }
+
+ if (sizeof(long double) <= buf_size) {
+ *((long double *)malloc_buf) = 7.2;
+ }
+
+ if (signal_happened) {
+ printf("\nFAIL: Signal %d occurred storing numeric types at address 0x%llx (%d bytes)\n",
+ signal_happened, (unsigned long long)malloc_buf, buf_size);
+ summarize();
+ exit(1);
+ }
+
+
+
+ /* Pick a random byte value to set the bytes of the buffer to */
+ set_buf_val = rand() & 0xFF;
+ memset(malloc_buf,set_buf_val,buf_size);
+ if (signal_happened) {
+ summarize();
+ printf("FAIL: Signal %d caught initializing buffer to byte value %d!\n",signal_happened, set_buf_val);
+ exit(1);
+ }
+
+ /* Save the new malloc info */
+
+ minfo_array[malloc_calls_made].buf_ptr = malloc_buf;
+ minfo_array[malloc_calls_made].buf_size = buf_size;
+ minfo_array[malloc_calls_made].set_val = set_buf_val;
+ minfo_array[malloc_calls_made].this_buffer_freed = 0;
+
+
+ /*
+ * Update counts and sums. Break out if we hit a requested limit.
+ */
+ malloc_calls_made++;
+ malloc_bufs++;
+ mem_allocated += buf_size;
+
+ if (malloc_calls_made >= max_malloc_calls) {
+ printf("Maximum malloc calls reached: %d\n",malloc_calls_made);
+ summarize();
+ cleanup();
+ printf("PASS\n");
+ exit(0);
+ }
+
+ if (max_mem > 0 && mem_allocated >= max_mem) {
+ printf("Maximum memory allocation reached: %lld\n",mem_allocated);
+ cleanup();
+ printf("PASS\n");
+ exit(0);
+ }
+
+ /* Now verify that no existing buffer has been stepped on */
+ for (bx=0; bx < malloc_calls_made; bx++) {
+ int cx;
+ unsigned char *bptr = minfo_array[bx].buf_ptr;
+ int expected_val = minfo_array[bx].set_val;
+
+ /* A previously free()'d buffer might get re-used */
+ if (minfo_array[bx].this_buffer_freed)
+ continue;
+
+ for (cx=0; cx < minfo_array[bx].buf_size; cx++) {
+ if (bptr[cx] != expected_val) {
+ summarize();
+ printf("FAIL: Allocated buffer [%d] appears to have been stepped on.\n", bx);
+ printf("Buffer address: 0x%llx, bad byte index %d\n",
+ (unsigned long long)bptr, cx);
+ printf("Expected byte value %d, but found %d\n",
+ expected_val, (int)(bptr[cx]));
+ exit(1);
+ }
+ }
+
+ /* If any signal occurred, that's a FAIL too. */
+ if (signal_happened) {
+ summarize();
+ printf("FAIL: Signal %d caught validating buffer contents.\n",signal_happened);
+ exit(1);
+ }
+
+ } /* end then malloc succeeded */
+
+ } /* end forever loop, until some end-point is reached */
+
+
+}