Author: njn
Date: 2007-10-09 07:49:05 +0100 (Tue, 09 Oct 2007)
New Revision: 6969
Log:
- Added --detailed-freq and --max-snapshots options.
- Increased max --depth value from 50 to 200.
- Adding some sanity checking on numeric command line options.
Modified:
branches/MASSIF2/massif/ms_main.c
branches/MASSIF2/massif/tests/Makefile.am
Modified: branches/MASSIF2/massif/ms_main.c
===================================================================
--- branches/MASSIF2/massif/ms_main.c 2007-10-09 03:11:48 UTC (rev 6968)
+++ branches/MASSIF2/massif/ms_main.c 2007-10-09 06:49:05 UTC (rev 6969)
@@ -44,9 +44,6 @@
// - do a graph-drawing test
// - write a good basic test that shows how the tool works, suitable for
// documentation
-// - make everything configurable, eg. min/max number of snapshots (which
-// also determine culling proportion), frequency of detailed snapshots,
-// etc.
//
// Misc:
// - with --heap=no, --heap-admin still counts. should it?
@@ -326,7 +323,7 @@
//--- Command line args ---//
//------------------------------------------------------------//
-#define MAX_DEPTH 50
+#define MAX_DEPTH 200
typedef enum { TimeMS, TimeB } TimeUnit;
@@ -339,12 +336,14 @@
}
}
-static Bool clo_heap = True;
-static UInt clo_heap_admin = 8;
-static Bool clo_stacks = True;
-static UInt clo_depth = 8; // XXX: too low?
-static UInt clo_threshold = 100; // 100 == 1%
-static UInt clo_time_unit = TimeMS;
+static Bool clo_heap = True;
+static UInt clo_heap_admin = 8;
+static Bool clo_stacks = True;
+static UInt clo_depth = 8; // XXX: too low?
+static UInt clo_threshold = 100; // 100 == 1%
+static UInt clo_time_unit = TimeMS;
+static UInt clo_detailed_freq = 10;
+static UInt clo_max_snapshots = 100;
static XArray* args_for_massif;
@@ -353,15 +352,16 @@
// Remember the arg for later use.
VG_(addToXA)(args_for_massif, &arg);
- VG_BOOL_CLO(arg, "--heap", clo_heap)
- else VG_BOOL_CLO(arg, "--stacks", clo_stacks)
+ VG_BOOL_CLO(arg, "--heap", clo_heap)
+ else VG_BOOL_CLO(arg, "--stacks", clo_stacks)
- // XXX: currently allows negative heap admin sizes! Abort if negative.
- else VG_NUM_CLO (arg, "--heap-admin", clo_heap_admin)
- else VG_BNUM_CLO(arg, "--depth", clo_depth, 1, MAX_DEPTH)
+ else VG_NUM_CLO(arg, "--heap-admin", clo_heap_admin)
+ else VG_NUM_CLO(arg, "--depth", clo_depth)
// XXX: use a fractional number, so no division by 100
- else VG_NUM_CLO(arg, "--threshold", clo_threshold)
+ else VG_NUM_CLO(arg, "--threshold", clo_threshold)
+ else VG_NUM_CLO(arg, "--detailed-freq", clo_detailed_freq)
+ else VG_NUM_CLO(arg, "--max-snapshots", clo_max_snapshots)
else if (VG_CLO_STREQ(arg, "--time-unit=ms")) clo_time_unit = TimeMS;
else if (VG_CLO_STREQ(arg, "--time-unit=B")) clo_time_unit = TimeB;
@@ -389,6 +389,8 @@
" total size, <n>=0 shows all nodes) [100]\n"
" --time-unit=ms|B time unit, milliseconds or bytes\n"
" alloc'd/dealloc'd on the heap [ms]\n"
+" --detailed-freq=<N> every Nth snapshot should be detailed [10]\n"
+" --max-snapshots=<N> maximum number of snapshots recorded [100]\n"
);
VG_(replacement_malloc_print_usage)();
}
@@ -652,7 +654,7 @@
// Nb: it's possible to end up with an empty trace, eg. if 'main' is marked
// as an alloc-fn. This is ok.
static
-Int get_IPs( ThreadId tid, Bool is_custom_alloc, Addr ips[], Int max_ips)
+Int get_IPs( ThreadId tid, Bool is_custom_alloc, Addr ips[])
{
Int n_ips, i, n_alloc_fns_removed = 0;
Int overestimate;
@@ -756,12 +758,12 @@
// Gets an XCon and puts it in the tree. Returns the XCon's bottom-XPt.
static XPt* get_XCon( ThreadId tid, Bool is_custom_alloc )
{
- static Addr ips[MAX_IPS]; // Static to minimise stack size.
+ Addr ips[MAX_IPS];
Int i;
XPt* xpt = alloc_xpt;
// After this call, the IPs we want are in ips[0]..ips[n_ips-1].
- Int n_ips = get_IPs(tid, is_custom_alloc, ips, MAX_IPS);
+ Int n_ips = get_IPs(tid, is_custom_alloc, ips);
// Now do the search/insertion of the XCon. 'L' is the loop counter,
// being the index into ips[].
@@ -822,11 +824,6 @@
// limit again, we again cull and then take them even more slowly, and so
// on.
-// XXX: if the program is really short, we may get no detailed snapshots...
-// that's bad, do something about it.
-#define MAX_N_SNAPSHOTS 100 // Keep it even, for simplicity
-#define DETAILED_SNAPSHOT_FREQ 10 // Every Nth snapshot will be detailed
-
// Time is measured either in ms or bytes, depending on the --time-unit
// option. It's a Long because it can exceed 32-bits reasonably easily, and
// because we need to allow negative values to represent unset times.
@@ -853,8 +850,8 @@
} // otherwise NULL
Snapshot;
-static UInt next_snapshot_i = 0; // Index of where next snapshot will go.
-static Snapshot snapshots[MAX_N_SNAPSHOTS];
+static UInt next_snapshot_i = 0; // Index of where next snapshot will go.
+static Snapshot* snapshots; // Array of snapshots.
static Bool is_snapshot_in_use(Snapshot* snapshot)
{
@@ -898,7 +895,7 @@
for (i = 0; i < next_snapshot_i; i++) {
tl_assert( is_snapshot_in_use( & snapshots[i] ));
}
- for ( ; i < MAX_N_SNAPSHOTS; i++) {
+ for ( ; i < clo_max_snapshots; i++) {
tl_assert(!is_snapshot_in_use( & snapshots[i] ));
}
}
@@ -974,14 +971,14 @@
// Sets j to the index of the first not-yet-removed snapshot at or after i
#define FIND_SNAPSHOT(i, j) \
for (j = i; \
- j < MAX_N_SNAPSHOTS && !is_snapshot_in_use(&snapshots[j]); \
+ j < clo_max_snapshots && !is_snapshot_in_use(&snapshots[j]); \
j++) { }
VERB(1, "Culling...");
// First we remove enough snapshots by clearing them in-place. Once
// that's done, we can slide the remaining ones down.
- for (i = 0; i < MAX_N_SNAPSHOTS/2; i++) {
+ for (i = 0; i < clo_max_snapshots/2; i++) {
// Find the snapshot representing the smallest timespan. The timespan
// for snapshot n = d(N-1,N)+d(N,N+1), where d(A,B) is the time between
// snapshot A and B. We don't consider the first and last snapshots for
@@ -996,7 +993,7 @@
FIND_SNAPSHOT(j+1, jn);
min_timespan = 0x7fffffffffffffffLL;
min_j = -1;
- while (jn < MAX_N_SNAPSHOTS) {
+ while (jn < clo_max_snapshots) {
Time timespan = snapshots[jn].time - snapshots[jp].time;
tl_assert(timespan >= 0);
// Nb: We never cull the peak snapshot.
@@ -1027,7 +1024,7 @@
// i. Then slide everything down.
for (i = 0; is_snapshot_in_use( &snapshots[i] ); i++) { }
for (j = i; !is_snapshot_in_use( &snapshots[j] ); j++) { }
- for ( ; j < MAX_N_SNAPSHOTS; j++) {
+ for ( ; j < clo_max_snapshots; j++) {
if (is_snapshot_in_use( &snapshots[j] )) {
snapshots[i++] = snapshots[j];
clear_snapshot(&snapshots[j]);
@@ -1075,7 +1072,7 @@
// Print remaining snapshots, if necessary.
if (VG_(clo_verbosity) > 1) {
VERB(1, "Finished culling (%3d of %3d deleted)",
- n_deleted, MAX_N_SNAPSHOTS);
+ n_deleted, clo_max_snapshots);
for (i = 0; i < next_snapshot_i; i++) {
VERB_snapshot(1, " post-cull", i);
}
@@ -1170,7 +1167,7 @@
static Time min_time_interval = 0;
// Zero allows startup snapshot.
static Time earliest_possible_time_of_next_snapshot = 0;
- static Int n_snapshots_until_next_detailed = DETAILED_SNAPSHOT_FREQ - 1;
+ static Int n_snapshots_since_last_detailed = 0;
Snapshot* snapshot;
Bool is_detailed;
@@ -1184,7 +1181,7 @@
n_skipped_snapshots_since_last_snapshot++;
return;
}
- is_detailed = (0 == n_snapshots_until_next_detailed);
+ is_detailed = (clo_detailed_freq-1 == n_snapshots_since_last_detailed);
break;
case Peak: {
@@ -1212,9 +1209,9 @@
// Record if it was detailed.
if (is_detailed) {
- n_snapshots_until_next_detailed = DETAILED_SNAPSHOT_FREQ - 1;
+ n_snapshots_since_last_detailed = 0;
} else {
- n_snapshots_until_next_detailed--;
+ n_snapshots_since_last_detailed++;
}
// Update peak data, if it's a Peak snapshot.
@@ -1248,7 +1245,7 @@
// Cull the entries, if our snapshot table is full.
next_snapshot_i++;
- if (MAX_N_SNAPSHOTS == next_snapshot_i) {
+ if (clo_max_snapshots == next_snapshot_i) {
min_time_interval = cull_snapshots();
}
@@ -1875,10 +1872,34 @@
static void ms_post_clo_init(void)
{
- Int i = 1;
+ Int i;
Word alloc_fn_word;
+ // Check options.
+ if (clo_heap_admin < 0 || clo_heap_admin > 1024) {
+ VG_(message)(Vg_UserMsg, "--heap-admin must be between 0 and 1024");
+ VG_(err_bad_option)("--heap-admin");
+ }
+ if (clo_depth < 1 || clo_depth > MAX_DEPTH) {
+ VG_(message)(Vg_UserMsg, "--depth must be between 1 and %d", MAX_DEPTH);
+ VG_(err_bad_option)("--depth");
+ }
+ if (clo_threshold < 0 || clo_threshold > 10000) {
+ VG_(message)(Vg_UserMsg, "--threshold must be between 0 and 10000");
+ VG_(err_bad_option)("--threshold");
+ }
+ if (clo_detailed_freq < 1 || clo_detailed_freq > 10000) {
+ VG_(message)(Vg_UserMsg, "--detailed-freq must be between 1 and 10000");
+ VG_(err_bad_option)("--detailed-freq");
+ }
+ if (clo_max_snapshots < 10 || clo_max_snapshots > 1000) {
+ VG_(message)(Vg_UserMsg, "--max-snapshots must be between 10 and 1000");
+ VG_(err_bad_option)("--max-snapshots");
+ }
+
+ // Print alloc-fns, if necessary.
if (VG_(clo_verbosity) > 1) {
+ i = 1;
VERB(1, "alloc-fns:");
VG_(OSetWord_ResetIter)(alloc_fns);
while ( VG_(OSetWord_Next)(alloc_fns, &alloc_fn_word) ) {
@@ -1887,19 +1908,24 @@
}
}
+ // Events to track.
if (clo_stacks) {
- // Events to track.
VG_(track_new_mem_stack) ( new_mem_stack );
VG_(track_die_mem_stack) ( die_mem_stack );
VG_(track_new_mem_stack_signal) ( new_mem_stack_signal );
VG_(track_die_mem_stack_signal) ( die_mem_stack_signal );
}
+
+ // Initialise snapshot array, and sanity-check it.
+ snapshots = VG_(malloc)(sizeof(Snapshot) * clo_max_snapshots);
+ for (i = 0; i < clo_max_snapshots; i++) {
+ clear_snapshot( & snapshots[i] );
+ }
+ sanity_check_snapshots_array();
}
static void ms_pre_clo_init(void)
{
- Int i;
-
VG_(details_name) ("Massif");
VG_(details_version) (NULL);
VG_(details_description) ("a space profiler");
@@ -1936,12 +1962,6 @@
// Dummy node at top of the context structure.
alloc_xpt = new_XPt(/*ip*/0, /*parent*/NULL);
- // Initialise snapshot array, and sanity check it.
- for (i = 0; i < MAX_N_SNAPSHOTS; i++) {
- clear_snapshot( & snapshots[i] );
- }
- sanity_check_snapshots_array();
-
// Initialise alloc_fns.
init_alloc_fns();
Modified: branches/MASSIF2/massif/tests/Makefile.am
===================================================================
--- branches/MASSIF2/massif/tests/Makefile.am 2007-10-09 03:11:48 UTC (rev
6968)
+++ branches/MASSIF2/massif/tests/Makefile.am 2007-10-09 06:49:05 UTC (rev
6969)
@@ -20,6 +20,7 @@
long-time.post.exp long-time.stderr.exp long-time.vgtest \
null.post.exp null.stderr.exp null.vgtest \
one.post.exp one.stderr.exp one.vgtest \
+ params.post.exp params.stderr.exp params.vgtest \
peak.post.exp peak.stderr.exp peak.vgtest \
realloc.post.exp realloc.stderr.exp realloc.vgtest \
thresholds_0_0.post.exp thresholds_0_0.stderr.exp
thresholds_0_0.vgtest \
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