Commit 45c82b1d authored by Nick Mathewson's avatar Nick Mathewson 🎨
Browse files

r14024@catbus: nickm | 2007-07-30 14:13:58 -0400

 Glibc (and maybe others) define a mallinfo() that can be used to see how the platform malloc is acting inside.  When we have it, dump its output on dumpmemusage().


svn:r10996
parent 9fb77a64
......@@ -3,11 +3,13 @@ Changes in version 0.2.0.4-alpha - 2007-??-??
- Be even more aggressive about releasing RAM from small
empty buffers. Thanks to our free-list code, this shouldn't be too
performance-intensive.
- Disable sentiel-based debugging for buffer code: we squashed all
- Disable sentinel-based debugging for buffer code: we squashed all
the bugs that this was supposed to detect a long time ago, and
now its only effect is to change our buffer sizes from nice
powers of two (which platform mallocs tend to like) to values
siightly over powers of two (which make some platform mallocs sad).
- Log malloc statistics from mallinfo() on platforms where it
exists.
Changes in version 0.2.0.3-alpha - 2007-07-29
......
......@@ -152,7 +152,7 @@ dnl -------------------------------------------------------------------
dnl Check for functions before libevent, since libevent-1.2 apparently
dnl exports strlcpy without defining it in a header.
AC_CHECK_FUNCS(gettimeofday ftime socketpair uname inet_aton strptime getrlimit strlcat strlcpy strtoull ftello getaddrinfo localtime_r gmtime_r memmem strtok_r inet_pton inet_ntop)
AC_CHECK_FUNCS(gettimeofday ftime socketpair uname inet_aton strptime getrlimit strlcat strlcpy strtoull ftello getaddrinfo localtime_r gmtime_r memmem strtok_r inet_pton inet_ntop mallinfo)
if test $enable_threads = "yes"; then
AC_CHECK_HEADERS(pthread.h)
......@@ -244,7 +244,7 @@ AC_CHECK_HEADERS(netdb.h sys/ioctl.h sys/socket.h arpa/inet.h netinet/in.h pwd.h
dnl These headers are not essential
AC_CHECK_HEADERS(stdint.h sys/types.h inttypes.h sys/param.h sys/wait.h limits.h sys/limits.h netinet/in.h arpa/inet.h machine/limits.h syslog.h sys/time.h sys/resource.h inttypes.h utime.h sys/utime.h sys/mman.h netintet/in.h netinet/in6.h)
AC_CHECK_HEADERS(stdint.h sys/types.h inttypes.h sys/param.h sys/wait.h limits.h sys/limits.h netinet/in.h arpa/inet.h machine/limits.h syslog.h sys/time.h sys/resource.h inttypes.h utime.h sys/utime.h sys/mman.h netintet/in.h netinet/in6.h malloc.h)
AC_CHECK_HEADERS(net/if.h, net_if_found=1, net_if_found=0,
[#ifdef HAVE_SYS_TYPES_H
......@@ -623,7 +623,8 @@ if test x$enable_gcc_warnings = xyes; then
#error
#endif]), have_gcc42=yes, have_gcc42=no)
CFLAGS="$CFLAGS -W -Wfloat-equal -Wundef -Wpointer-arith -Wstrict-prototypes -Wmissing-prototypes -Wwrite-strings -Wredundant-decls -Wchar-subscripts -Wcomment -Wformat=2 -Wwrite-strings -Waggregate-return -Wmissing-declarations -Wredundant-decls -Wnested-externs -Wbad-function-cast -Wswitch-enum -Werror"
CFLAGS="$CFLAGS -W -Wfloat-equal -Wundef -Wpointer-arith -Wstrict-prototypes -Wmissing-prototypes -Wwrite-strings -Wredundant-decls -Wchar-subscripts -Wcomment -Wformat=2 -Wwrite-strings -Wmissing-declarations -Wredundant-decls -Wnested-externs -Wbad-function-cast -Wswitch-enum -Werror"
# Disabled, so we can use mallinfo(): -Waggregate-return
if test x$have_gcc4 = xyes ; then
# These warnings break gcc 3.3.5 and work on gcc 4.0.2
......
......@@ -213,6 +213,24 @@ _tor_free(void *mem)
tor_free(mem);
}
/** DOCDOC */
void
tor_log_mallinfo(int severity)
{
#ifdef HAVE_MALLINFO
struct mallinfo mi;
memset(&mi, 0, sizeof(mi));
mi = mallinfo();
log(severity, LD_MM,
"mallinfo() said: arena=%d, ordblks=%d, smblks=%d, hblks=%d, "
"hblkhd=%d, usmblks=%d, fsmblks=%d, uordblks=%d, fordblks=%d, "
"keepcost=%d",
mi.arena, mi.ordblks, mi.smblks, mi.hblks,
mi.hblkhd, mi.usmblks, mi.fsmblks, mi.uordblks, mi.fordblks,
mi.keepcost);
#endif
}
/* =====
* Math
* ===== */
......
......@@ -23,6 +23,9 @@
#ifdef HAVE_TIME_H
#include <time.h>
#endif
#ifdef HAVE_MALLOC_H
#include <malloc.h>
#endif
/* Replace assert() with a variant that sends failures to the log before
* calling assert() normally.
......@@ -105,6 +108,8 @@ extern int dmalloc_free(const char *file, const int line, void *pnt,
#define tor_strndup(s, n) _tor_strndup(s, n DMALLOC_ARGS)
#define tor_memdup(s, n) _tor_memdup(s, n DMALLOC_ARGS)
void tor_log_mallinfo(int severity);
/** Return the offset of <b>member</b> within the type <b>tp</b>, in bytes */
#if defined(__GNUC__) && __GNUC__ > 3
#define STRUCT_OFFSET(tp, member) __builtin_offsetof(tp, member)
......
......@@ -1550,6 +1550,7 @@ dumpmemusage(int severity)
dump_routerlist_mem_usage(severity);
dump_cell_pool_usage(severity);
buf_dump_freelist_sizes(severity);
tor_log_mallinfo(severity);
}
/** Write all statistics to the log, with log level 'severity'. Called
......
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