search for: malloc_stat

...s.h> #include <stdio.h> #include <stdlib.h> #include <unistd.h> #include <malloc.h> #define KB 196 int main(int argc, char **argv) { void *p; char buf[1000]; snprintf(buf, 1000, "pmap -x %d", getpid()); printf("Start of day\n"); system(buf); malloc_stats(); printf("\n=========================\n\n"); p = malloc(KB*0x1000); printf("allocated %dKB block at %p\n", KB, p); system(buf); malloc_stats(); printf("\n=========================\n\n"); free(p); printf("Freed block at %p\n", p); system(buf);...

On 11/21/2014 06:12 AM, Ian Campbell wrote: > On Fri, 2014-11-21 at 11:03 +0000, Ian Campbell wrote: >> http://man7.org/linux/man-pages/man3/mallopt.3.html also talks about >> various dynamic thresholds for growing and shrinking the heap. My guess >> is that we are bouncing up and down over some threshold with every other >> reboot. > IOW I'm not overly concerned

...because I was too lazy to verify they were safe... <<<patch for 5.4.44>>> --- libc-5.4.44/libc/dl-malloc/malloc.c.secenv Sun Nov 2 03:48:44 1997 +++ libc-5.4.44/libc/dl-malloc/malloc.c Sat May 16 15:28:14 1998 @@ -257,6 +257,8 @@ #include <stdio.h> /* needed for malloc_stats */ +extern char *__libc_secure_getenv(const char *); + /* Compile-time options @@ -3365,15 +3367,15 @@ if(__libc_malloc_initialized) return; __libc_malloc_initialized = 1; - if((s = getenv("MALLOC_TRIM_THRESHOLD_"))) + if((s = __libc_secure_getenv("MALLOC_TRIM_THRE...

I have a new problem: Register RBP is used in a function foo. (I am not allocating RBP to any virtual register, the instances of RBP in function foo are in the machine code when my register allocator starts.) Function foo calls function bar. Register RBP is not saved across the call, though it is live after the call. Function bar includes a virtual register. The code that I'm using to

...rn struct mallinfo mallinfo (void) __attribute__ ((__nothrow__)); extern int mallopt (int __param, int __val) __attribute__ ((__nothrow__)); extern int malloc_trim (size_t __pad) __attribute__ ((__nothrow__)); extern size_t malloc_usable_size (void *__ptr) __attribute__ ((__nothrow__)); extern void malloc_stats (void) __attribute__ ((__nothrow__)); extern void *malloc_get_state (void) __attribute__ ((__nothrow__)); extern int malloc_set_state (void *__ptr) __attribute__ ((__nothrow__)); extern void (*__malloc_initialize_hook) (void); extern void (*__free_hook) (void *__ptr, __const void *); extern void *...