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-rw-r--r--malloc/memusage.c325
1 files changed, 200 insertions, 125 deletions
diff --git a/malloc/memusage.c b/malloc/memusage.c
index b552ec37b0..16fa09060a 100644
--- a/malloc/memusage.c
+++ b/malloc/memusage.c
@@ -1,5 +1,5 @@
/* Profile heap and stack memory usage of running program.
- Copyright (C) 1998-2002, 2004 Free Software Foundation, Inc.
+ Copyright (C) 1998-2002, 2004, 2005, 2006 Free Software Foundation, Inc.
This file is part of the GNU C Library.
Contributed by Ulrich Drepper <drepper@cygnus.com>, 1998.
@@ -18,11 +18,13 @@
Software Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA
02111-1307 USA. */
+#include <atomic.h>
#include <dlfcn.h>
#include <errno.h>
#include <fcntl.h>
#include <inttypes.h>
#include <signal.h>
+#include <stdarg.h>
#include <stdbool.h>
#include <stdio.h>
#include <stdlib.h>
@@ -43,7 +45,7 @@ static void (*freep) (void *);
static void *(*mmapp) (void *, size_t, int, int, int, off_t);
static void *(*mmap64p) (void *, size_t, int, int, int, off64_t);
static int (*munmapp) (void *, size_t);
-static void *(*mremapp) (void *, size_t, size_t, int);
+static void *(*mremapp) (void *, size_t, size_t, int, void *);
enum
{
@@ -69,24 +71,23 @@ struct header
#define MAGIC 0xfeedbeaf
-static unsigned long int calls[idx_last];
-static unsigned long int failed[idx_last];
-static unsigned long long int total[idx_last];
-static unsigned long long int grand_total;
-static unsigned long int histogram[65536 / 16];
-static unsigned long int large;
-static unsigned long int calls_total;
-static unsigned long int inplace;
-static unsigned long int decreasing;
-static unsigned long int inplace_mremap;
-static unsigned long int decreasing_mremap;
-static long int current_use[2];
-static long int peak_use[3];
-static uintptr_t start_sp;
+static memusage_cntr_t calls[idx_last];
+static memusage_cntr_t failed[idx_last];
+static memusage_size_t total[idx_last];
+static memusage_size_t grand_total;
+static memusage_cntr_t histogram[65536 / 16];
+static memusage_cntr_t large;
+static memusage_cntr_t calls_total;
+static memusage_cntr_t inplace;
+static memusage_cntr_t decreasing;
+static memusage_cntr_t realloc_free;
+static memusage_cntr_t inplace_mremap;
+static memusage_cntr_t decreasing_mremap;
+static memusage_size_t current_heap;
+static memusage_size_t peak_use[3];
+static __thread uintptr_t start_sp;
/* A few macros to make the source more readable. */
-#define current_heap current_use[0]
-#define current_stack current_use[1]
#define peak_heap peak_use[0]
#define peak_stack peak_use[1]
#define peak_total peak_use[2]
@@ -103,14 +104,14 @@ extern const char *__progname;
struct entry
{
- size_t heap;
- size_t stack;
+ uint64_t heap;
+ uint64_t stack;
uint32_t time_low;
uint32_t time_high;
};
-static struct entry buffer[DEFAULT_BUFFER_SIZE];
-static size_t buffer_cnt;
+static struct entry buffer[2 * DEFAULT_BUFFER_SIZE];
+static uatomic32_t buffer_cnt;
static struct entry first;
@@ -118,8 +119,6 @@ static struct entry first;
static void
update_data (struct header *result, size_t len, size_t old_len)
{
- long int total_use;
-
if (result != NULL)
{
/* Record the information we need and mark the block using a
@@ -129,38 +128,60 @@ update_data (struct header *result, size_t len, size_t old_len)
}
/* Compute current heap usage and compare it with the maximum value. */
- current_heap += len - old_len;
- if (current_heap > peak_heap)
- peak_heap = current_heap;
-
- /* Compute current stack usage and compare it with the maximum value. */
+ memusage_size_t heap
+ = atomic_exchange_and_add (&current_heap, len - old_len) + len - old_len;
+ atomic_max (&peak_heap, heap);
+
+ /* Compute current stack usage and compare it with the maximum
+ value. The base stack pointer might not be set if this is not
+ the main thread and it is the first call to any of these
+ functions. */
+ if (__builtin_expect (!start_sp, 0))
+ start_sp = GETSP ();
+
+ uintptr_t sp = GETSP ();
#ifdef STACK_GROWS_UPWARD
- current_stack = GETSP () - start_sp;
+ /* This can happen in threads where we didn't catch the thread's
+ stack early enough. */
+ if (__builtin_expect (sp < start_sp, 0))
+ start_sp = sp;
+ size_t current_stack = sp - start_sp;
#else
- current_stack = start_sp - GETSP ();
+ /* This can happen in threads where we didn't catch the thread's
+ stack early enough. */
+ if (__builtin_expect (sp > start_sp, 0))
+ start_sp = sp;
+ size_t current_stack = start_sp - sp;
#endif
- if (current_stack > peak_stack)
- peak_stack = current_stack;
+ atomic_max (&peak_stack, current_stack);
/* Add up heap and stack usage and compare it with the maximum value. */
- total_use = current_heap + current_stack;
- if (total_use > peak_total)
- peak_total = total_use;
+ atomic_max (&peak_total, heap + current_stack);
/* Store the value only if we are writing to a file. */
if (fd != -1)
{
- buffer[buffer_cnt].heap = current_heap;
- buffer[buffer_cnt].stack = current_stack;
- GETTIME (buffer[buffer_cnt].time_low, buffer[buffer_cnt].time_high);
- ++buffer_cnt;
-
- /* Write out buffer if it is full. */
- if (buffer_cnt == buffer_size)
+ uatomic32_t idx = atomic_exchange_and_add (&buffer_cnt, 1);
+ if (idx >= 2 * buffer_size)
{
- write (fd, buffer, buffer_cnt * sizeof (struct entry));
- buffer_cnt = 0;
+ /* We try to reset the counter to the correct range. If
+ this fails because of another thread increasing the
+ counter it does not matter since that thread will take
+ care of the correction. */
+ unsigned int reset = idx - 2 * buffer_size;
+ atomic_compare_and_exchange_val_acq (&buffer_size, reset, idx);
+ idx = reset;
}
+
+ buffer[idx].heap = current_heap;
+ buffer[idx].stack = current_stack;
+ GETTIME (buffer[idx].time_low, buffer[idx].time_high);
+
+ /* Write out buffer if it is full. */
+ if (idx + 1 == buffer_size)
+ write (fd, buffer, buffer_size * sizeof (struct entry));
+ else if (idx + 1 == 2 * buffer_size)
+ write (fd, &buffer[buffer_size], buffer_size * sizeof (struct entry));
}
}
@@ -207,8 +228,8 @@ me (void)
mmap64p =
(void *(*) (void *, size_t, int, int, int, off64_t)) dlsym (RTLD_NEXT,
"mmap64");
- mremapp = (void *(*) (void *, size_t, size_t, int)) dlsym (RTLD_NEXT,
- "mremap");
+ mremapp = (void *(*) (void *, size_t, size_t, int, void *)) dlsym (RTLD_NEXT,
+ "mremap");
munmapp = (int (*) (void *, size_t)) dlsym (RTLD_NEXT, "munmap");
initialized = 1;
@@ -247,6 +268,7 @@ me (void)
GETTIME (first.time_low, first.time_high);
/* Write it two times since we need the starting and end time. */
write (fd, &first, sizeof (first));
+ write (fd, &first, sizeof (first));
/* Determine the buffer size. We use the default if the
environment variable is not present. */
@@ -317,24 +339,24 @@ malloc (size_t len)
return (*mallocp) (len);
/* Keep track of number of calls. */
- ++calls[idx_malloc];
+ atomic_increment (&calls[idx_malloc]);
/* Keep track of total memory consumption for `malloc'. */
- total[idx_malloc] += len;
+ atomic_add (&total[idx_malloc], len);
/* Keep track of total memory requirement. */
- grand_total += len;
+ atomic_add (&grand_total, len);
/* Remember the size of the request. */
if (len < 65536)
- ++histogram[len / 16];
+ atomic_increment (&histogram[len / 16]);
else
- ++large;
+ atomic_increment (&large);
/* Total number of calls of any of the functions. */
- ++calls_total;
+ atomic_increment (&calls_total);
/* Do the real work. */
result = (struct header *) (*mallocp) (len + sizeof (struct header));
if (result == NULL)
{
- ++failed[idx_malloc];
+ atomic_increment (&failed[idx_malloc]);
return NULL;
}
@@ -383,36 +405,53 @@ realloc (void *old, size_t len)
}
/* Keep track of number of calls. */
- ++calls[idx_realloc];
+ atomic_increment (&calls[idx_realloc]);
if (len > old_len)
{
/* Keep track of total memory consumption for `realloc'. */
- total[idx_realloc] += len - old_len;
+ atomic_add (&total[idx_realloc], len - old_len);
/* Keep track of total memory requirement. */
- grand_total += len - old_len;
+ atomic_add (&grand_total, len - old_len);
+ }
+
+ if (len == 0 && old != NULL)
+ {
+ /* Special case. */
+ atomic_increment (&realloc_free);
+ /* Keep track of total memory freed using `free'. */
+ atomic_add (&total[idx_free], real->length);
+
+ /* Update the allocation data and write out the records if necessary. */
+ update_data (NULL, 0, old_len);
+
+ /* Do the real work. */
+ (*freep) (real);
+
+ return NULL;
}
+
/* Remember the size of the request. */
if (len < 65536)
- ++histogram[len / 16];
+ atomic_increment (&histogram[len / 16]);
else
- ++large;
+ atomic_increment (&large);
/* Total number of calls of any of the functions. */
- ++calls_total;
+ atomic_increment (&calls_total);
/* Do the real work. */
result = (struct header *) (*reallocp) (real, len + sizeof (struct header));
if (result == NULL)
{
- ++failed[idx_realloc];
+ atomic_increment (&failed[idx_realloc]);
return NULL;
}
/* Record whether the reduction/increase happened in place. */
if (real == result)
- ++inplace;
+ atomic_increment (&inplace);
/* Was the buffer increased? */
if (old_len > len)
- ++decreasing;
+ atomic_increment (&decreasing);
/* Update the allocation data and write out the records if necessary. */
update_data (result, len, old_len);
@@ -443,16 +482,16 @@ calloc (size_t n, size_t len)
return (*callocp) (n, len);
/* Keep track of number of calls. */
- ++calls[idx_calloc];
+ atomic_increment (&calls[idx_calloc]);
/* Keep track of total memory consumption for `calloc'. */
- total[idx_calloc] += size;
+ atomic_add (&total[idx_calloc], size);
/* Keep track of total memory requirement. */
- grand_total += size;
+ atomic_add (&grand_total, size);
/* Remember the size of the request. */
if (size < 65536)
- ++histogram[size / 16];
+ atomic_increment (&histogram[size / 16]);
else
- ++large;
+ atomic_increment (&large);
/* Total number of calls of any of the functions. */
++calls_total;
@@ -460,7 +499,7 @@ calloc (size_t n, size_t len)
result = (struct header *) (*mallocp) (size + sizeof (struct header));
if (result == NULL)
{
- ++failed[idx_calloc];
+ atomic_increment (&failed[idx_calloc]);
return NULL;
}
@@ -497,7 +536,7 @@ free (void *ptr)
/* `free (NULL)' has no effect. */
if (ptr == NULL)
{
- ++calls[idx_free];
+ atomic_increment (&calls[idx_free]);
return;
}
@@ -511,9 +550,9 @@ free (void *ptr)
}
/* Keep track of number of calls. */
- ++calls[idx_free];
+ atomic_increment (&calls[idx_free]);
/* Keep track of total memory freed using `free'. */
- total[idx_free] += real->length;
+ atomic_add (&total[idx_free], real->length);
/* Update the allocation data and write out the records if necessary. */
update_data (NULL, 0, real->length);
@@ -547,22 +586,22 @@ mmap (void *start, size_t len, int prot, int flags, int fd, off_t offset)
? idx_mmap_a : prot & PROT_WRITE ? idx_mmap_w : idx_mmap_r);
/* Keep track of number of calls. */
- ++calls[idx];
+ atomic_increment (&calls[idx]);
/* Keep track of total memory consumption for `malloc'. */
- total[idx] += len;
+ atomic_add (&total[idx], len);
/* Keep track of total memory requirement. */
- grand_total += len;
+ atomic_add (&grand_total, len);
/* Remember the size of the request. */
if (len < 65536)
- ++histogram[len / 16];
+ atomic_increment (&histogram[len / 16]);
else
- ++large;
+ atomic_increment (&large);
/* Total number of calls of any of the functions. */
- ++calls_total;
+ atomic_increment (&calls_total);
/* Check for failures. */
if (result == NULL)
- ++failed[idx];
+ atomic_increment (&failed[idx]);
else if (idx == idx_mmap_w)
/* Update the allocation data and write out the records if
necessary. Note the first parameter is NULL which means
@@ -599,22 +638,22 @@ mmap64 (void *start, size_t len, int prot, int flags, int fd, off64_t offset)
? idx_mmap_a : prot & PROT_WRITE ? idx_mmap_w : idx_mmap_r);
/* Keep track of number of calls. */
- ++calls[idx];
+ atomic_increment (&calls[idx]);
/* Keep track of total memory consumption for `malloc'. */
- total[idx] += len;
+ atomic_add (&total[idx], len);
/* Keep track of total memory requirement. */
- grand_total += len;
+ atomic_add (&grand_total, len);
/* Remember the size of the request. */
if (len < 65536)
- ++histogram[len / 16];
+ atomic_increment (&histogram[len / 16]);
else
- ++large;
+ atomic_increment (&large);
/* Total number of calls of any of the functions. */
- ++calls_total;
+ atomic_increment (&calls_total);
/* Check for failures. */
if (result == NULL)
- ++failed[idx];
+ atomic_increment (&failed[idx]);
else if (idx == idx_mmap_w)
/* Update the allocation data and write out the records if
necessary. Note the first parameter is NULL which means
@@ -630,9 +669,14 @@ mmap64 (void *start, size_t len, int prot, int flags, int fd, off64_t offset)
/* `mmap' replacement. We do not have to keep track of the sizesince
`munmap' will get it as a parameter. */
void *
-mremap (void *start, size_t old_len, size_t len, int flags)
+mremap (void *start, size_t old_len, size_t len, int flags, ...)
{
void *result = NULL;
+ va_list ap;
+
+ va_start (ap, flags);
+ void *newaddr = (flags & MREMAP_FIXED) ? va_arg (ap, void *) : NULL;
+ va_end (ap);
/* Determine real implementation if not already happened. */
if (__builtin_expect (initialized <= 0, 0))
@@ -643,38 +687,38 @@ mremap (void *start, size_t old_len, size_t len, int flags)
}
/* Always get a block. We don't need extra memory. */
- result = (*mremapp) (start, old_len, len, flags);
+ result = (*mremapp) (start, old_len, len, flags, newaddr);
if (!not_me && trace_mmap)
{
/* Keep track of number of calls. */
- ++calls[idx_mremap];
+ atomic_increment (&calls[idx_mremap]);
if (len > old_len)
{
/* Keep track of total memory consumption for `malloc'. */
- total[idx_mremap] += len - old_len;
+ atomic_add (&total[idx_mremap], len - old_len);
/* Keep track of total memory requirement. */
- grand_total += len - old_len;
+ atomic_add (&grand_total, len - old_len);
}
/* Remember the size of the request. */
if (len < 65536)
- ++histogram[len / 16];
+ atomic_increment (&histogram[len / 16]);
else
- ++large;
+ atomic_increment (&large);
/* Total number of calls of any of the functions. */
- ++calls_total;
+ atomic_increment (&calls_total);
/* Check for failures. */
if (result == NULL)
- ++failed[idx_mremap];
+ atomic_increment (&failed[idx_mremap]);
else
{
/* Record whether the reduction/increase happened in place. */
if (start == result)
- ++inplace_mremap;
+ atomic_increment (&inplace_mremap);
/* Was the buffer increased? */
if (old_len > len)
- ++decreasing_mremap;
+ atomic_increment (&decreasing_mremap);
/* Update the allocation data and write out the records if
necessary. Note the first parameter is NULL which means
@@ -708,19 +752,19 @@ munmap (void *start, size_t len)
if (!not_me && trace_mmap)
{
/* Keep track of number of calls. */
- ++calls[idx_munmap];
+ atomic_increment (&calls[idx_munmap]);
if (__builtin_expect (result == 0, 1))
{
/* Keep track of total memory freed using `free'. */
- total[idx_munmap] += len;
+ atomic_add (&total[idx_munmap], len);
/* Update the allocation data and write out the records if
necessary. */
update_data (NULL, 0, len);
}
else
- ++failed[idx_munmap];
+ atomic_increment (&failed[idx_munmap]);
}
return result;
@@ -745,7 +789,12 @@ dest (void)
if (fd != -1)
{
/* Write the partially filled buffer. */
- write (fd, buffer, buffer_cnt * sizeof (struct entry));
+ if (buffer_cnt > buffer_size)
+ write (fd, buffer + buffer_size,
+ (buffer_cnt - buffer_size) * sizeof (struct entry));
+ else
+ write (fd, buffer, buffer_cnt * sizeof (struct entry));
+
/* Go back to the beginning of the file. We allocated two records
here when we opened the file. */
lseek (fd, 0, SEEK_SET);
@@ -769,38 +818,58 @@ dest (void)
\e[01;32mMemory usage summary:\e[0;0m heap total: %llu, heap peak: %lu, stack peak: %lu\n\
\e[04;34m total calls total memory failed calls\e[0m\n\
\e[00;34m malloc|\e[0m %10lu %12llu %s%12lu\e[00;00m\n\
-\e[00;34mrealloc|\e[0m %10lu %12llu %s%12lu\e[00;00m (in place: %ld, dec: %ld)\n\
+\e[00;34mrealloc|\e[0m %10lu %12llu %s%12lu\e[00;00m (nomove:%ld, dec:%ld, free:%ld)\n\
\e[00;34m calloc|\e[0m %10lu %12llu %s%12lu\e[00;00m\n\
\e[00;34m free|\e[0m %10lu %12llu\n",
- grand_total, (unsigned long int) peak_heap,
+ (unsigned long long int) grand_total, (unsigned long int) peak_heap,
(unsigned long int) peak_stack,
- calls[idx_malloc], total[idx_malloc],
- failed[idx_malloc] ? "\e[01;41m" : "", failed[idx_malloc],
- calls[idx_realloc], total[idx_realloc],
- failed[idx_realloc] ? "\e[01;41m" : "", failed[idx_realloc],
- inplace, decreasing,
- calls[idx_calloc], total[idx_calloc],
- failed[idx_calloc] ? "\e[01;41m" : "", failed[idx_calloc],
- calls[idx_free], total[idx_free]);
+ (unsigned long int) calls[idx_malloc],
+ (unsigned long long int) total[idx_malloc],
+ failed[idx_malloc] ? "\e[01;41m" : "",
+ (unsigned long int) failed[idx_malloc],
+ (unsigned long int) calls[idx_realloc],
+ (unsigned long long int) total[idx_realloc],
+ failed[idx_realloc] ? "\e[01;41m" : "",
+ (unsigned long int) failed[idx_realloc],
+ (unsigned long int) inplace,
+ (unsigned long int) decreasing,
+ (unsigned long int) realloc_free,
+ (unsigned long int) calls[idx_calloc],
+ (unsigned long long int) total[idx_calloc],
+ failed[idx_calloc] ? "\e[01;41m" : "",
+ (unsigned long int) failed[idx_calloc],
+ (unsigned long int) calls[idx_free],
+ (unsigned long long int) total[idx_free]);
if (trace_mmap)
fprintf (stderr, "\
\e[00;34mmmap(r)|\e[0m %10lu %12llu %s%12lu\e[00;00m\n\
\e[00;34mmmap(w)|\e[0m %10lu %12llu %s%12lu\e[00;00m\n\
\e[00;34mmmap(a)|\e[0m %10lu %12llu %s%12lu\e[00;00m\n\
-\e[00;34m mremap|\e[0m %10lu %12llu %s%12lu\e[00;00m (in place: %ld, dec: %ld)\n\
+\e[00;34m mremap|\e[0m %10lu %12llu %s%12lu\e[00;00m (nomove: %ld, dec:%ld)\n\
\e[00;34m munmap|\e[0m %10lu %12llu %s%12lu\e[00;00m\n",
- calls[idx_mmap_r], total[idx_mmap_r],
- failed[idx_mmap_r] ? "\e[01;41m" : "", failed[idx_mmap_r],
- calls[idx_mmap_w], total[idx_mmap_w],
- failed[idx_mmap_w] ? "\e[01;41m" : "", failed[idx_mmap_w],
- calls[idx_mmap_a], total[idx_mmap_a],
- failed[idx_mmap_a] ? "\e[01;41m" : "", failed[idx_mmap_a],
- calls[idx_mremap], total[idx_mremap],
- failed[idx_mremap] ? "\e[01;41m" : "", failed[idx_mremap],
- inplace_mremap, decreasing_mremap,
- calls[idx_munmap], total[idx_munmap],
- failed[idx_munmap] ? "\e[01;41m" : "", failed[idx_munmap]);
+ (unsigned long int) calls[idx_mmap_r],
+ (unsigned long long int) total[idx_mmap_r],
+ failed[idx_mmap_r] ? "\e[01;41m" : "",
+ (unsigned long int) failed[idx_mmap_r],
+ (unsigned long int) calls[idx_mmap_w],
+ (unsigned long long int) total[idx_mmap_w],
+ failed[idx_mmap_w] ? "\e[01;41m" : "",
+ (unsigned long int) failed[idx_mmap_w],
+ (unsigned long int) calls[idx_mmap_a],
+ (unsigned long long int) total[idx_mmap_a],
+ failed[idx_mmap_a] ? "\e[01;41m" : "",
+ (unsigned long int) failed[idx_mmap_a],
+ (unsigned long int) calls[idx_mremap],
+ (unsigned long long int) total[idx_mremap],
+ failed[idx_mremap] ? "\e[01;41m" : "",
+ (unsigned long int) failed[idx_mremap],
+ (unsigned long int) inplace_mremap,
+ (unsigned long int) decreasing_mremap,
+ (unsigned long int) calls[idx_munmap],
+ (unsigned long long int) total[idx_munmap],
+ failed[idx_munmap] ? "\e[01;41m" : "",
+ (unsigned long int) failed[idx_munmap]);
/* Write out a histoogram of the sizes of the allocations. */
fprintf (stderr, "\e[01;32mHistogram for block sizes:\e[0;0m\n");
@@ -817,7 +886,7 @@ dest (void)
{
percent = (histogram[cnt / 16] * 100) / calls_total;
fprintf (stderr, "%5d-%-5d%12lu ", cnt, cnt + 15,
- histogram[cnt / 16]);
+ (unsigned long int) histogram[cnt / 16]);
if (percent == 0)
fputs (" <1% \e[41;37m", stderr);
else
@@ -834,7 +903,7 @@ dest (void)
if (large != 0)
{
percent = (large * 100) / calls_total;
- fprintf (stderr, " large %12lu ", large);
+ fprintf (stderr, " large %12lu ", (unsigned long int) large);
if (percent == 0)
fputs (" <1% \e[41;37m", stderr);
else
@@ -844,4 +913,10 @@ dest (void)
fputc ('=', stderr);
fputs ("\e[0;0m\n", stderr);
}
+
+ /* Any following malloc/free etc. calls should generate statistics again,
+ because otherwise freeing something that has been malloced before
+ this destructor (including struct header in front of it) wouldn't
+ be properly freed. */
+ not_me = false;
}
generated by cgit v1.2.3 (git 2.25.1) at 2024-11-05 18:01:54 +0000