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6d3d12ebef
This commit includes string.h in common-defs.h and removes all other inclusions. gdb/ 2014-08-07 Gary Benson <gbenson@redhat.com> * common/common-defs.h: Include string.h. * aarch64-tdep.c: Do not include string.h. * ada-exp.y: Likewise. * ada-lang.c: Likewise. * ada-lex.l: Likewise. * ada-typeprint.c: Likewise. * ada-valprint.c: Likewise. * aix-thread.c: Likewise. * alpha-linux-tdep.c: Likewise. * alpha-mdebug-tdep.c: Likewise. * alpha-nat.c: Likewise. * alpha-osf1-tdep.c: Likewise. * alpha-tdep.c: Likewise. * alphanbsd-tdep.c: Likewise. * amd64-dicos-tdep.c: Likewise. * amd64-linux-tdep.c: Likewise. * amd64-nat.c: Likewise. * amd64-sol2-tdep.c: Likewise. * amd64fbsd-tdep.c: Likewise. * amd64obsd-tdep.c: Likewise. * arch-utils.c: Likewise. * arm-linux-nat.c: Likewise. * arm-linux-tdep.c: Likewise. * arm-tdep.c: Likewise. * arm-wince-tdep.c: Likewise. * armbsd-tdep.c: Likewise. * armnbsd-nat.c: Likewise. * armnbsd-tdep.c: Likewise. * armobsd-tdep.c: Likewise. * avr-tdep.c: Likewise. * ax-gdb.c: Likewise. * ax-general.c: Likewise. * bcache.c: Likewise. * bfin-tdep.c: Likewise. * breakpoint.c: Likewise. * build-id.c: Likewise. * buildsym.c: Likewise. * c-exp.y: Likewise. * c-lang.c: Likewise. * c-typeprint.c: Likewise. * c-valprint.c: Likewise. * charset.c: Likewise. * cli-out.c: Likewise. * cli/cli-cmds.c: Likewise. * cli/cli-decode.c: Likewise. * cli/cli-dump.c: Likewise. * cli/cli-interp.c: Likewise. * cli/cli-logging.c: Likewise. * cli/cli-script.c: Likewise. * cli/cli-setshow.c: Likewise. * cli/cli-utils.c: Likewise. * coffread.c: Likewise. * common/agent.c: Likewise. * common/buffer.c: Likewise. * common/buffer.h: Likewise. * common/common-utils.c: Likewise. * common/filestuff.c: Likewise. * common/filestuff.c: Likewise. * common/format.c: Likewise. * common/print-utils.c: Likewise. * common/rsp-low.c: Likewise. * common/signals.c: Likewise. * common/vec.h: Likewise. * common/xml-utils.c: Likewise. * core-regset.c: Likewise. * corefile.c: Likewise. * corelow.c: Likewise. * cp-abi.c: Likewise. * cp-name-parser.y: Likewise. * cp-support.c: Likewise. * cp-valprint.c: Likewise. * cris-tdep.c: Likewise. * d-exp.y: Likewise. * darwin-nat.c: Likewise. * dbxread.c: Likewise. * dcache.c: Likewise. * demangle.c: Likewise. * dicos-tdep.c: Likewise. * disasm.c: Likewise. * doublest.c: Likewise. * dsrec.c: Likewise. * dummy-frame.c: Likewise. * dwarf2-frame.c: Likewise. * dwarf2loc.c: Likewise. * dwarf2read.c: Likewise. * elfread.c: Likewise. * environ.c: Likewise. * eval.c: Likewise. * event-loop.c: Likewise. * exceptions.c: Likewise. * exec.c: Likewise. * expprint.c: Likewise. * f-exp.y: Likewise. * f-lang.c: Likewise. * f-typeprint.c: Likewise. * f-valprint.c: Likewise. * fbsd-nat.c: Likewise. * findcmd.c: Likewise. * findvar.c: Likewise. * fork-child.c: Likewise. * frame.c: Likewise. * frv-linux-tdep.c: Likewise. * frv-tdep.c: Likewise. * gdb.c: Likewise. * gdb_bfd.c: Likewise. * gdbarch.c: Likewise. * gdbarch.sh: Likewise. * gdbtypes.c: Likewise. * gnu-nat.c: Likewise. * gnu-v2-abi.c: Likewise. * gnu-v3-abi.c: Likewise. * go-exp.y: Likewise. * go-lang.c: Likewise. * go32-nat.c: Likewise. * guile/guile.c: Likewise. * guile/scm-auto-load.c: Likewise. * hppa-hpux-tdep.c: Likewise. * hppa-linux-nat.c: Likewise. * hppanbsd-tdep.c: Likewise. * hppaobsd-tdep.c: Likewise. * i386-cygwin-tdep.c: Likewise. * i386-dicos-tdep.c: Likewise. * i386-linux-tdep.c: Likewise. * i386-nto-tdep.c: Likewise. * i386-sol2-tdep.c: Likewise. * i386-tdep.c: Likewise. * i386bsd-tdep.c: Likewise. * i386gnu-nat.c: Likewise. * i386nbsd-tdep.c: Likewise. * i386obsd-tdep.c: Likewise. * i387-tdep.c: Likewise. * ia64-libunwind-tdep.c: Likewise. * ia64-linux-nat.c: Likewise. * inf-child.c: Likewise. * inf-ptrace.c: Likewise. * inf-ttrace.c: Likewise. * infcall.c: Likewise. * infcmd.c: Likewise. * inflow.c: Likewise. * infrun.c: Likewise. * interps.c: Likewise. * iq2000-tdep.c: Likewise. * irix5-nat.c: Likewise. * jv-exp.y: Likewise. * jv-lang.c: Likewise. * jv-typeprint.c: Likewise. * jv-valprint.c: Likewise. * language.c: Likewise. * linux-fork.c: Likewise. * linux-nat.c: Likewise. * lm32-tdep.c: Likewise. * m2-exp.y: Likewise. * m2-typeprint.c: Likewise. * m32c-tdep.c: Likewise. * m32r-linux-nat.c: Likewise. * m32r-linux-tdep.c: Likewise. * m32r-rom.c: Likewise. * m32r-tdep.c: Likewise. * m68hc11-tdep.c: Likewise. * m68k-tdep.c: Likewise. * m68kbsd-tdep.c: Likewise. * m68klinux-nat.c: Likewise. * m68klinux-tdep.c: Likewise. * m88k-tdep.c: Likewise. * machoread.c: Likewise. * macrocmd.c: Likewise. * main.c: Likewise. * mdebugread.c: Likewise. * mem-break.c: Likewise. * memattr.c: Likewise. * memory-map.c: Likewise. * mep-tdep.c: Likewise. * mi/mi-cmd-break.c: Likewise. * mi/mi-cmd-disas.c: Likewise. * mi/mi-cmd-env.c: Likewise. * mi/mi-cmd-stack.c: Likewise. * mi/mi-cmd-var.c: Likewise. * mi/mi-cmds.c: Likewise. * mi/mi-console.c: Likewise. * mi/mi-getopt.c: Likewise. * mi/mi-interp.c: Likewise. * mi/mi-main.c: Likewise. * mi/mi-parse.c: Likewise. * microblaze-rom.c: Likewise. * microblaze-tdep.c: Likewise. * mingw-hdep.c: Likewise. * minidebug.c: Likewise. * minsyms.c: Likewise. * mips-irix-tdep.c: Likewise. * mips-linux-tdep.c: Likewise. * mips-tdep.c: Likewise. * mips64obsd-tdep.c: Likewise. * mipsnbsd-tdep.c: Likewise. * mipsread.c: Likewise. * mn10300-linux-tdep.c: Likewise. * mn10300-tdep.c: Likewise. * monitor.c: Likewise. * moxie-tdep.c: Likewise. * mt-tdep.c: Likewise. * nat/linux-btrace.c: Likewise. * nat/linux-osdata.c: Likewise. * nat/linux-procfs.c: Likewise. * nat/linux-ptrace.c: Likewise. * nat/linux-waitpid.c: Likewise. * nbsd-tdep.c: Likewise. * nios2-linux-tdep.c: Likewise. * nto-procfs.c: Likewise. * nto-tdep.c: Likewise. * objc-lang.c: Likewise. * objfiles.c: Likewise. * opencl-lang.c: Likewise. * osabi.c: Likewise. * osdata.c: Likewise. * p-exp.y: Likewise. * p-lang.c: Likewise. * p-typeprint.c: Likewise. * parse.c: Likewise. * posix-hdep.c: Likewise. * ppc-linux-nat.c: Likewise. * ppc-sysv-tdep.c: Likewise. * ppcfbsd-tdep.c: Likewise. * ppcnbsd-tdep.c: Likewise. * ppcobsd-tdep.c: Likewise. * printcmd.c: Likewise. * procfs.c: Likewise. * prologue-value.c: Likewise. * python/py-auto-load.c: Likewise. * python/py-gdb-readline.c: Likewise. * ravenscar-thread.c: Likewise. * regcache.c: Likewise. * registry.c: Likewise. * remote-fileio.c: Likewise. * remote-m32r-sdi.c: Likewise. * remote-mips.c: Likewise. * remote-notif.c: Likewise. * remote-sim.c: Likewise. * remote.c: Likewise. * reverse.c: Likewise. * rs6000-aix-tdep.c: Likewise. * ser-base.c: Likewise. * ser-go32.c: Likewise. * ser-mingw.c: Likewise. * ser-pipe.c: Likewise. * ser-tcp.c: Likewise. * ser-unix.c: Likewise. * serial.c: Likewise. * sh-tdep.c: Likewise. * sh64-tdep.c: Likewise. * shnbsd-tdep.c: Likewise. * skip.c: Likewise. * sol-thread.c: Likewise. * solib-dsbt.c: Likewise. * solib-frv.c: Likewise. * solib-osf.c: Likewise. * solib-som.c: Likewise. * solib-spu.c: Likewise. * solib-target.c: Likewise. * solib.c: Likewise. * somread.c: Likewise. * source.c: Likewise. * sparc-nat.c: Likewise. * sparc-sol2-tdep.c: Likewise. * sparc-tdep.c: Likewise. * sparc64-tdep.c: Likewise. * sparc64fbsd-tdep.c: Likewise. * sparc64nbsd-tdep.c: Likewise. * sparcnbsd-tdep.c: Likewise. * spu-linux-nat.c: Likewise. * spu-multiarch.c: Likewise. * spu-tdep.c: Likewise. * stabsread.c: Likewise. * stack.c: Likewise. * std-regs.c: Likewise. * symfile.c: Likewise. * symmisc.c: Likewise. * symtab.c: Likewise. * target.c: Likewise. * thread.c: Likewise. * tilegx-linux-nat.c: Likewise. * tilegx-tdep.c: Likewise. * top.c: Likewise. * tracepoint.c: Likewise. * tui/tui-command.c: Likewise. * tui/tui-data.c: Likewise. * tui/tui-disasm.c: Likewise. * tui/tui-file.c: Likewise. * tui/tui-layout.c: Likewise. * tui/tui-out.c: Likewise. * tui/tui-regs.c: Likewise. * tui/tui-source.c: Likewise. * tui/tui-stack.c: Likewise. * tui/tui-win.c: Likewise. * tui/tui-windata.c: Likewise. * tui/tui-winsource.c: Likewise. * typeprint.c: Likewise. * ui-file.c: Likewise. * ui-out.c: Likewise. * user-regs.c: Likewise. * utils.c: Likewise. * v850-tdep.c: Likewise. * valarith.c: Likewise. * valops.c: Likewise. * valprint.c: Likewise. * value.c: Likewise. * varobj.c: Likewise. * vax-tdep.c: Likewise. * vaxnbsd-tdep.c: Likewise. * vaxobsd-tdep.c: Likewise. * windows-nat.c: Likewise. * xcoffread.c: Likewise. * xml-support.c: Likewise. * xstormy16-tdep.c: Likewise. * xtensa-linux-nat.c: Likewise. gdb/gdbserver/ 2014-08-07 Gary Benson <gbenson@redhat.com> * server.h: Do not include string.h. * event-loop.c: Likewise. * linux-low.c: Likewise. * regcache.c: Likewise. * remote-utils.c: Likewise. * spu-low.c: Likewise. * utils.c: Likewise.
491 lines
15 KiB
C
491 lines
15 KiB
C
/* Implement a cached obstack.
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Written by Fred Fish <fnf@cygnus.com>
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Rewritten by Jim Blandy <jimb@cygnus.com>
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Copyright (C) 1999-2014 Free Software Foundation, Inc.
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This file is part of GDB.
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This program is free software; you can redistribute it and/or modify
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it under the terms of the GNU General Public License as published by
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the Free Software Foundation; either version 3 of the License, or
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(at your option) any later version.
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This program is distributed in the hope that it will be useful,
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but WITHOUT ANY WARRANTY; without even the implied warranty of
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MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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GNU General Public License for more details.
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You should have received a copy of the GNU General Public License
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along with this program. If not, see <http://www.gnu.org/licenses/>. */
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#include "defs.h"
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#include "gdb_obstack.h"
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#include "bcache.h"
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/* The type used to hold a single bcache string. The user data is
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stored in d.data. Since it can be any type, it needs to have the
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same alignment as the most strict alignment of any type on the host
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machine. I don't know of any really correct way to do this in
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stock ANSI C, so just do it the same way obstack.h does. */
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struct bstring
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{
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/* Hash chain. */
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struct bstring *next;
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/* Assume the data length is no more than 64k. */
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unsigned short length;
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/* The half hash hack. This contains the upper 16 bits of the hash
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value and is used as a pre-check when comparing two strings and
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avoids the need to do length or memcmp calls. It proves to be
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roughly 100% effective. */
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unsigned short half_hash;
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union
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{
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char data[1];
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double dummy;
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}
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d;
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};
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/* The structure for a bcache itself. The bcache is initialized, in
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bcache_xmalloc(), by filling it with zeros and then setting the
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corresponding obstack's malloc() and free() methods. */
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struct bcache
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{
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/* All the bstrings are allocated here. */
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struct obstack cache;
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/* How many hash buckets we're using. */
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unsigned int num_buckets;
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/* Hash buckets. This table is allocated using malloc, so when we
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grow the table we can return the old table to the system. */
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struct bstring **bucket;
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/* Statistics. */
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unsigned long unique_count; /* number of unique strings */
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long total_count; /* total number of strings cached, including dups */
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long unique_size; /* size of unique strings, in bytes */
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long total_size; /* total number of bytes cached, including dups */
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long structure_size; /* total size of bcache, including infrastructure */
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/* Number of times that the hash table is expanded and hence
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re-built, and the corresponding number of times that a string is
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[re]hashed as part of entering it into the expanded table. The
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total number of hashes can be computed by adding TOTAL_COUNT to
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expand_hash_count. */
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unsigned long expand_count;
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unsigned long expand_hash_count;
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/* Number of times that the half-hash compare hit (compare the upper
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16 bits of hash values) hit, but the corresponding combined
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length/data compare missed. */
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unsigned long half_hash_miss_count;
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/* Hash function to be used for this bcache object. */
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unsigned long (*hash_function)(const void *addr, int length);
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/* Compare function to be used for this bcache object. */
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int (*compare_function)(const void *, const void *, int length);
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};
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/* The old hash function was stolen from SDBM. This is what DB 3.0
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uses now, and is better than the old one. */
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unsigned long
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hash(const void *addr, int length)
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{
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return hash_continue (addr, length, 0);
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}
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/* Continue the calculation of the hash H at the given address. */
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unsigned long
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hash_continue (const void *addr, int length, unsigned long h)
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{
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const unsigned char *k, *e;
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k = (const unsigned char *)addr;
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e = k+length;
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for (; k< e;++k)
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{
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h *=16777619;
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h ^= *k;
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}
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return (h);
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}
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/* Growing the bcache's hash table. */
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/* If the average chain length grows beyond this, then we want to
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resize our hash table. */
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#define CHAIN_LENGTH_THRESHOLD (5)
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static void
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expand_hash_table (struct bcache *bcache)
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{
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/* A table of good hash table sizes. Whenever we grow, we pick the
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next larger size from this table. sizes[i] is close to 1 << (i+10),
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so we roughly double the table size each time. After we fall off
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the end of this table, we just double. Don't laugh --- there have
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been executables sighted with a gigabyte of debug info. */
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static unsigned long sizes[] = {
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1021, 2053, 4099, 8191, 16381, 32771,
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65537, 131071, 262144, 524287, 1048573, 2097143,
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4194301, 8388617, 16777213, 33554467, 67108859, 134217757,
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268435459, 536870923, 1073741827, 2147483659UL
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};
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unsigned int new_num_buckets;
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struct bstring **new_buckets;
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unsigned int i;
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/* Count the stats. Every unique item needs to be re-hashed and
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re-entered. */
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bcache->expand_count++;
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bcache->expand_hash_count += bcache->unique_count;
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/* Find the next size. */
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new_num_buckets = bcache->num_buckets * 2;
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for (i = 0; i < (sizeof (sizes) / sizeof (sizes[0])); i++)
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if (sizes[i] > bcache->num_buckets)
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{
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new_num_buckets = sizes[i];
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break;
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}
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/* Allocate the new table. */
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{
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size_t new_size = new_num_buckets * sizeof (new_buckets[0]);
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new_buckets = (struct bstring **) xmalloc (new_size);
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memset (new_buckets, 0, new_size);
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bcache->structure_size -= (bcache->num_buckets
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* sizeof (bcache->bucket[0]));
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bcache->structure_size += new_size;
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}
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/* Rehash all existing strings. */
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for (i = 0; i < bcache->num_buckets; i++)
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{
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struct bstring *s, *next;
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for (s = bcache->bucket[i]; s; s = next)
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{
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struct bstring **new_bucket;
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next = s->next;
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new_bucket = &new_buckets[(bcache->hash_function (&s->d.data,
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s->length)
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% new_num_buckets)];
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s->next = *new_bucket;
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*new_bucket = s;
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}
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}
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/* Plug in the new table. */
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if (bcache->bucket)
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xfree (bcache->bucket);
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bcache->bucket = new_buckets;
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bcache->num_buckets = new_num_buckets;
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}
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/* Looking up things in the bcache. */
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/* The number of bytes needed to allocate a struct bstring whose data
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is N bytes long. */
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#define BSTRING_SIZE(n) (offsetof (struct bstring, d.data) + (n))
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/* Find a copy of the LENGTH bytes at ADDR in BCACHE. If BCACHE has
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never seen those bytes before, add a copy of them to BCACHE. In
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either case, return a pointer to BCACHE's copy of that string. */
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const void *
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bcache (const void *addr, int length, struct bcache *cache)
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{
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return bcache_full (addr, length, cache, NULL);
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}
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/* Find a copy of the LENGTH bytes at ADDR in BCACHE. If BCACHE has
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never seen those bytes before, add a copy of them to BCACHE. In
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either case, return a pointer to BCACHE's copy of that string. If
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optional ADDED is not NULL, return 1 in case of new entry or 0 if
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returning an old entry. */
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const void *
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bcache_full (const void *addr, int length, struct bcache *bcache, int *added)
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{
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unsigned long full_hash;
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unsigned short half_hash;
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int hash_index;
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struct bstring *s;
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if (added)
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*added = 0;
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/* Lazily initialize the obstack. This can save quite a bit of
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memory in some cases. */
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if (bcache->total_count == 0)
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{
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/* We could use obstack_specify_allocation here instead, but
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gdb_obstack.h specifies the allocation/deallocation
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functions. */
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obstack_init (&bcache->cache);
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}
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/* If our average chain length is too high, expand the hash table. */
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if (bcache->unique_count >= bcache->num_buckets * CHAIN_LENGTH_THRESHOLD)
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expand_hash_table (bcache);
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bcache->total_count++;
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bcache->total_size += length;
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full_hash = bcache->hash_function (addr, length);
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half_hash = (full_hash >> 16);
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hash_index = full_hash % bcache->num_buckets;
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/* Search the hash bucket for a string identical to the caller's.
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As a short-circuit first compare the upper part of each hash
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values. */
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for (s = bcache->bucket[hash_index]; s; s = s->next)
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{
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if (s->half_hash == half_hash)
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{
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if (s->length == length
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&& bcache->compare_function (&s->d.data, addr, length))
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return &s->d.data;
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else
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bcache->half_hash_miss_count++;
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}
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}
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/* The user's string isn't in the list. Insert it after *ps. */
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{
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struct bstring *new
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= obstack_alloc (&bcache->cache, BSTRING_SIZE (length));
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memcpy (&new->d.data, addr, length);
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new->length = length;
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new->next = bcache->bucket[hash_index];
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new->half_hash = half_hash;
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bcache->bucket[hash_index] = new;
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bcache->unique_count++;
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bcache->unique_size += length;
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bcache->structure_size += BSTRING_SIZE (length);
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if (added)
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*added = 1;
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return &new->d.data;
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}
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}
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/* Compare the byte string at ADDR1 of lenght LENGHT to the
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string at ADDR2. Return 1 if they are equal. */
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static int
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bcache_compare (const void *addr1, const void *addr2, int length)
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{
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return memcmp (addr1, addr2, length) == 0;
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}
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/* Allocating and freeing bcaches. */
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|
||
/* Allocated a bcache. HASH_FUNCTION and COMPARE_FUNCTION can be used
|
||
to pass in custom hash, and compare functions to be used by this
|
||
bcache. If HASH_FUNCTION is NULL hash() is used and if
|
||
COMPARE_FUNCTION is NULL memcmp() is used. */
|
||
|
||
struct bcache *
|
||
bcache_xmalloc (unsigned long (*hash_function)(const void *, int length),
|
||
int (*compare_function)(const void *,
|
||
const void *,
|
||
int length))
|
||
{
|
||
/* Allocate the bcache pre-zeroed. */
|
||
struct bcache *b = XCNEW (struct bcache);
|
||
|
||
if (hash_function)
|
||
b->hash_function = hash_function;
|
||
else
|
||
b->hash_function = hash;
|
||
|
||
if (compare_function)
|
||
b->compare_function = compare_function;
|
||
else
|
||
b->compare_function = bcache_compare;
|
||
return b;
|
||
}
|
||
|
||
/* Free all the storage associated with BCACHE. */
|
||
void
|
||
bcache_xfree (struct bcache *bcache)
|
||
{
|
||
if (bcache == NULL)
|
||
return;
|
||
/* Only free the obstack if we actually initialized it. */
|
||
if (bcache->total_count > 0)
|
||
obstack_free (&bcache->cache, 0);
|
||
xfree (bcache->bucket);
|
||
xfree (bcache);
|
||
}
|
||
|
||
|
||
|
||
/* Printing statistics. */
|
||
|
||
static void
|
||
print_percentage (int portion, int total)
|
||
{
|
||
if (total == 0)
|
||
/* i18n: Like "Percentage of duplicates, by count: (not applicable)". */
|
||
printf_filtered (_("(not applicable)\n"));
|
||
else
|
||
printf_filtered ("%3d%%\n", (int) (portion * 100.0 / total));
|
||
}
|
||
|
||
|
||
/* Print statistics on BCACHE's memory usage and efficacity at
|
||
eliminating duplication. NAME should describe the kind of data
|
||
BCACHE holds. Statistics are printed using `printf_filtered' and
|
||
its ilk. */
|
||
void
|
||
print_bcache_statistics (struct bcache *c, char *type)
|
||
{
|
||
int occupied_buckets;
|
||
int max_chain_length;
|
||
int median_chain_length;
|
||
int max_entry_size;
|
||
int median_entry_size;
|
||
|
||
/* Count the number of occupied buckets, tally the various string
|
||
lengths, and measure chain lengths. */
|
||
{
|
||
unsigned int b;
|
||
int *chain_length = XCNEWVEC (int, c->num_buckets + 1);
|
||
int *entry_size = XCNEWVEC (int, c->unique_count + 1);
|
||
int stringi = 0;
|
||
|
||
occupied_buckets = 0;
|
||
|
||
for (b = 0; b < c->num_buckets; b++)
|
||
{
|
||
struct bstring *s = c->bucket[b];
|
||
|
||
chain_length[b] = 0;
|
||
|
||
if (s)
|
||
{
|
||
occupied_buckets++;
|
||
|
||
while (s)
|
||
{
|
||
gdb_assert (b < c->num_buckets);
|
||
chain_length[b]++;
|
||
gdb_assert (stringi < c->unique_count);
|
||
entry_size[stringi++] = s->length;
|
||
s = s->next;
|
||
}
|
||
}
|
||
}
|
||
|
||
/* To compute the median, we need the set of chain lengths
|
||
sorted. */
|
||
qsort (chain_length, c->num_buckets, sizeof (chain_length[0]),
|
||
compare_positive_ints);
|
||
qsort (entry_size, c->unique_count, sizeof (entry_size[0]),
|
||
compare_positive_ints);
|
||
|
||
if (c->num_buckets > 0)
|
||
{
|
||
max_chain_length = chain_length[c->num_buckets - 1];
|
||
median_chain_length = chain_length[c->num_buckets / 2];
|
||
}
|
||
else
|
||
{
|
||
max_chain_length = 0;
|
||
median_chain_length = 0;
|
||
}
|
||
if (c->unique_count > 0)
|
||
{
|
||
max_entry_size = entry_size[c->unique_count - 1];
|
||
median_entry_size = entry_size[c->unique_count / 2];
|
||
}
|
||
else
|
||
{
|
||
max_entry_size = 0;
|
||
median_entry_size = 0;
|
||
}
|
||
|
||
xfree (chain_length);
|
||
xfree (entry_size);
|
||
}
|
||
|
||
printf_filtered (_(" Cached '%s' statistics:\n"), type);
|
||
printf_filtered (_(" Total object count: %ld\n"), c->total_count);
|
||
printf_filtered (_(" Unique object count: %lu\n"), c->unique_count);
|
||
printf_filtered (_(" Percentage of duplicates, by count: "));
|
||
print_percentage (c->total_count - c->unique_count, c->total_count);
|
||
printf_filtered ("\n");
|
||
|
||
printf_filtered (_(" Total object size: %ld\n"), c->total_size);
|
||
printf_filtered (_(" Unique object size: %ld\n"), c->unique_size);
|
||
printf_filtered (_(" Percentage of duplicates, by size: "));
|
||
print_percentage (c->total_size - c->unique_size, c->total_size);
|
||
printf_filtered ("\n");
|
||
|
||
printf_filtered (_(" Max entry size: %d\n"), max_entry_size);
|
||
printf_filtered (_(" Average entry size: "));
|
||
if (c->unique_count > 0)
|
||
printf_filtered ("%ld\n", c->unique_size / c->unique_count);
|
||
else
|
||
/* i18n: "Average entry size: (not applicable)". */
|
||
printf_filtered (_("(not applicable)\n"));
|
||
printf_filtered (_(" Median entry size: %d\n"), median_entry_size);
|
||
printf_filtered ("\n");
|
||
|
||
printf_filtered (_(" \
|
||
Total memory used by bcache, including overhead: %ld\n"),
|
||
c->structure_size);
|
||
printf_filtered (_(" Percentage memory overhead: "));
|
||
print_percentage (c->structure_size - c->unique_size, c->unique_size);
|
||
printf_filtered (_(" Net memory savings: "));
|
||
print_percentage (c->total_size - c->structure_size, c->total_size);
|
||
printf_filtered ("\n");
|
||
|
||
printf_filtered (_(" Hash table size: %3d\n"),
|
||
c->num_buckets);
|
||
printf_filtered (_(" Hash table expands: %lu\n"),
|
||
c->expand_count);
|
||
printf_filtered (_(" Hash table hashes: %lu\n"),
|
||
c->total_count + c->expand_hash_count);
|
||
printf_filtered (_(" Half hash misses: %lu\n"),
|
||
c->half_hash_miss_count);
|
||
printf_filtered (_(" Hash table population: "));
|
||
print_percentage (occupied_buckets, c->num_buckets);
|
||
printf_filtered (_(" Median hash chain length: %3d\n"),
|
||
median_chain_length);
|
||
printf_filtered (_(" Average hash chain length: "));
|
||
if (c->num_buckets > 0)
|
||
printf_filtered ("%3lu\n", c->unique_count / c->num_buckets);
|
||
else
|
||
/* i18n: "Average hash chain length: (not applicable)". */
|
||
printf_filtered (_("(not applicable)\n"));
|
||
printf_filtered (_(" Maximum hash chain length: %3d\n"),
|
||
max_chain_length);
|
||
printf_filtered ("\n");
|
||
}
|
||
|
||
int
|
||
bcache_memory_used (struct bcache *bcache)
|
||
{
|
||
if (bcache->total_count == 0)
|
||
return 0;
|
||
return obstack_memory_used (&bcache->cache);
|
||
}
|