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/***********************************************************************
* *
* This software is part of the ast package *
* Copyright (c) 1992-2010 AT&T Intellectual Property *
* and is licensed under the *
* Common Public License, Version 1.0 *
* by AT&T Intellectual Property *
* *
* A copy of the License is available at *
* http://www.opensource.org/licenses/cpl1.0.txt *
* (with md5 checksum 059e8cd6165cb4c31e351f2b69388fd9) *
* *
* Information and Software Systems Research *
* AT&T Research *
* Florham Park NJ *
* *
* Glenn Fowler <gsf@research.att.com> *
* David Korn <dgk@research.att.com> *
* *
***********************************************************************/
#pragma prototyped
#define FORMAT "region=%(region)p size=%(size)d segments=%(segments)d busy=(%(busy_size)d,%(busy_blocks)d,%(busy_max)d) free=(%(free_size)d,%(free_blocks)d,%(free_max)d)"
static const char usage[] =
"[-?\n@(#)$Id: vmstate (AT&T Research) 2010-03-05 $\n]"
USAGE_LICENSE
"[+NAME?vmstate - list the calling process vmalloc region state]"
"[+DESCRIPTION?When invoked as a shell builtin, \bvmstate\b lists the "
"calling process \bvmalloc\b(3) state for all regions.]"
"[f:format?List the ids specified by \aformat\a. \aformat\a follows "
"\bprintf\b(3) conventions, except that \bsfio\b(3) inline ids are used "
"instead of arguments: "
"%[-+]][\awidth\a[.\aprecis\a[.\abase\a]]]]]](\aid\a)\achar\a. The "
"supported \aid\as are:]:[format:=" FORMAT "]"
"{"
"[+size?The total region size.]"
"[+segments?The number of segments in the region.]"
"[+busy_size?The total busy block size.]"
"[+busy_blocks?The number of busy blocks.]"
"[+busy_max?The maximum busy block size.]"
"[+free_size?The total free block size.]"
"[+free_blocks?The number of free blocks.]"
"[+free_max?The maximum free block size.]"
"}"
"[+SEE ALSO?\bvmalloc\b(3)]"
;
#include <cmd.h>
#include <vmalloc.h>
typedef struct State_s
{
char* format;
Vmalloc_t* vm;
Vmstat_t vs;
unsigned int regions;
Vmalloc_t* region[256];
} State_t;
/*
* sfkeyprintf() lookup
* handle==0 for heading
*/
static int
key(void* handle, Sffmt_t* fp, const char* arg, char** ps, Sflong_t* pn)
{
register State_t* state = (State_t*)handle;
register char* s;
if (!(s = fp->t_str) || streq(s, "size"))
*pn = state->vs.extent;
else if (streq(s, "region"))
*pn = integralof(state->vm);
else if (streq(s, "segments"))
*pn = state->vs.n_seg;
else if (streq(s, "busy_size"))
*pn = state->vs.s_busy;
else if (streq(s, "busy_blocks"))
*pn = state->vs.n_busy;
else if (streq(s, "busy_max"))
*pn = state->vs.m_busy;
else if (streq(s, "free_size"))
*pn = state->vs.s_free;
else if (streq(s, "free_blocks"))
*pn = state->vs.n_free;
else if (streq(s, "free_max"))
*pn = state->vs.m_free;
else if (streq(s, "format"))
*ps = (char*)state->format;
else
{
error(2, "%s: unknown format identifier", s);
return 0;
}
return 1;
}
static int
visit(Vmalloc_t* vm, void* addr, size_t size, Vmdisc_t* disc, void* handle)
{
State_t* state = (State_t*)handle;
Vmstat_t vs;
if (vm != state->vm)
{
state->vm = vm;
if (state->regions < elementsof(state->region))
state->region[state->regions++] = vm;
}
return 0;
}
int
b_vmstate(int argc, char** argv, void* context)
{
register int i;
State_t state;
memset(&state, 0, sizeof(state));
cmdinit(argc, argv, context, ERROR_CATALOG, 0);
for (;;)
{
switch (optget(argv, usage))
{
case 'f':
state.format = opt_info.arg;
continue;
case '?':
error(ERROR_USAGE|4, "%s", opt_info.arg);
continue;
case ':':
error(2, "%s", opt_info.arg);
continue;
}
break;
}
argv += opt_info.index;
if (error_info.errors || *argv)
error(ERROR_USAGE|4, "%s", optusage(NiL));
if (!state.format)
state.format = FORMAT;
/*
* the walk must do no allocations because it locks the regions
*/
vmwalk(NiL, visit, &state);
/*
* now we can compute and list the state of each region
*/
for (i = 0; i < state.regions; i++)
{
state.vm = state.region[i];
vmstat(state.vm, &state.vs);
sfkeyprintf(sfstdout, &state, state.format, key, NiL);
sfprintf(sfstdout, "\n");
}
return 0;
}
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