mirror of
https://sourceware.org/git/binutils-gdb.git
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230d2906b9
This renames the gdb exception types. The old types were only needed due to the macros in common-exception.h that are now gone. The intermediate layer of gdb_exception_RETURN_MASK_ALL did not seem needed, so this patch removes it entirely. gdb/ChangeLog 2019-04-08 Tom Tromey <tom@tromey.com> * common/common-exceptions.h (gdb_exception_RETURN_MASK_ALL): Remove. (gdb_exception_error): Rename from gdb_exception_RETURN_MASK_ERROR. (gdb_exception_quit): Rename from gdb_exception_RETURN_MASK_QUIT. (gdb_quit_bad_alloc): Update. * aarch64-tdep.c: Update. * ada-lang.c: Update. * ada-typeprint.c: Update. * ada-valprint.c: Update. * amd64-tdep.c: Update. * arch-utils.c: Update. * break-catch-throw.c: Update. * breakpoint.c: Update. * btrace.c: Update. * c-varobj.c: Update. * cli/cli-cmds.c: Update. * cli/cli-interp.c: Update. * cli/cli-script.c: Update. * common/common-exceptions.c: Update. * common/new-op.c: Update. * common/selftest.c: Update. * compile/compile-c-symbols.c: Update. * compile/compile-cplus-symbols.c: Update. * compile/compile-object-load.c: Update. * compile/compile-object-run.c: Update. * completer.c: Update. * corelow.c: Update. * cp-abi.c: Update. * cp-support.c: Update. * cp-valprint.c: Update. * darwin-nat.c: Update. * disasm-selftests.c: Update. * dtrace-probe.c: Update. * dwarf-index-cache.c: Update. * dwarf-index-write.c: Update. * dwarf2-frame-tailcall.c: Update. * dwarf2-frame.c: Update. * dwarf2loc.c: Update. * dwarf2read.c: Update. * eval.c: Update. * event-loop.c: Update. * event-top.c: Update. * exec.c: Update. * f-valprint.c: Update. * fbsd-tdep.c: Update. * frame-unwind.c: Update. * frame.c: Update. * gdbtypes.c: Update. * gnu-v3-abi.c: Update. * guile/guile-internal.h: Update. * guile/scm-block.c: Update. * guile/scm-breakpoint.c: Update. * guile/scm-cmd.c: Update. * guile/scm-disasm.c: Update. * guile/scm-frame.c: Update. * guile/scm-lazy-string.c: Update. * guile/scm-math.c: Update. * guile/scm-param.c: Update. * guile/scm-ports.c: Update. * guile/scm-pretty-print.c: Update. * guile/scm-symbol.c: Update. * guile/scm-symtab.c: Update. * guile/scm-type.c: Update. * guile/scm-value.c: Update. * i386-linux-tdep.c: Update. * i386-tdep.c: Update. * inf-loop.c: Update. * infcall.c: Update. * infcmd.c: Update. * infrun.c: Update. * jit.c: Update. * language.c: Update. * linespec.c: Update. * linux-fork.c: Update. * linux-nat.c: Update. * linux-tdep.c: Update. * linux-thread-db.c: Update. * main.c: Update. * mi/mi-cmd-break.c: Update. * mi/mi-cmd-stack.c: Update. * mi/mi-interp.c: Update. * mi/mi-main.c: Update. * objc-lang.c: Update. * p-valprint.c: Update. * parse.c: Update. * ppc-linux-tdep.c: Update. * printcmd.c: Update. * python/py-arch.c: Update. * python/py-breakpoint.c: Update. * python/py-cmd.c: Update. * python/py-finishbreakpoint.c: Update. * python/py-frame.c: Update. * python/py-framefilter.c: Update. * python/py-gdb-readline.c: Update. * python/py-inferior.c: Update. * python/py-infthread.c: Update. * python/py-lazy-string.c: Update. * python/py-linetable.c: Update. * python/py-objfile.c: Update. * python/py-param.c: Update. * python/py-prettyprint.c: Update. * python/py-progspace.c: Update. * python/py-record-btrace.c: Update. * python/py-record.c: Update. * python/py-symbol.c: Update. * python/py-type.c: Update. * python/py-unwind.c: Update. * python/py-utils.c: Update. * python/py-value.c: Update. * python/python.c: Update. * record-btrace.c: Update. * record-full.c: Update. * remote-fileio.c: Update. * remote.c: Update. * riscv-tdep.c: Update. * rs6000-aix-tdep.c: Update. * rs6000-tdep.c: Update. * rust-exp.y: Update. * rust-lang.c: Update. * s390-tdep.c: Update. * selftest-arch.c: Update. * solib-dsbt.c: Update. * solib-frv.c: Update. * solib-spu.c: Update. * solib-svr4.c: Update. * solib.c: Update. * sparc64-linux-tdep.c: Update. * stack.c: Update. * symfile-mem.c: Update. * symmisc.c: Update. * target.c: Update. * thread.c: Update. * top.c: Update. * tracefile-tfile.c: Update. * tui/tui.c: Update. * typeprint.c: Update. * unittests/cli-utils-selftests.c: Update. * unittests/parse-connection-spec-selftests.c: Update. * valops.c: Update. * valprint.c: Update. * value.c: Update. * varobj.c: Update. * windows-nat.c: Update. * x86-linux-nat.c: Update. * xml-support.c: Update. gdb/gdbserver/ChangeLog 2019-04-08 Tom Tromey <tom@tromey.com> * gdbreplay.c: Update. * linux-low.c: Update. * server.c: Update.
360 lines
9.8 KiB
C
360 lines
9.8 KiB
C
/* Caching of GDB/DWARF index files.
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Copyright (C) 1994-2019 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 "dwarf-index-cache.h"
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#include "build-id.h"
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#include "cli/cli-cmds.h"
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#include "command.h"
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#include "common/scoped_mmap.h"
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#include "common/pathstuff.h"
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#include "dwarf-index-write.h"
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#include "dwarf2read.h"
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#include "objfiles.h"
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#include "common/selftest.h"
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#include <string>
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#include <stdlib.h>
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/* When set to 1, show debug messages about the index cache. */
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static int debug_index_cache = 0;
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/* The index cache directory, used for "set/show index-cache directory". */
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static char *index_cache_directory = NULL;
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/* See dwarf-index.cache.h. */
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index_cache global_index_cache;
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/* set/show index-cache commands. */
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static cmd_list_element *set_index_cache_prefix_list;
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static cmd_list_element *show_index_cache_prefix_list;
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/* Default destructor of index_cache_resource. */
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index_cache_resource::~index_cache_resource () = default;
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/* See dwarf-index-cache.h. */
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void
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index_cache::set_directory (std::string dir)
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{
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gdb_assert (!dir.empty ());
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m_dir = std::move (dir);
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if (debug_index_cache)
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printf_unfiltered ("index cache: now using directory %s\n", m_dir.c_str ());
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}
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/* See dwarf-index-cache.h. */
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void
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index_cache::enable ()
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{
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if (debug_index_cache)
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printf_unfiltered ("index cache: enabling (%s)\n", m_dir.c_str ());
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m_enabled = true;
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}
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/* See dwarf-index-cache.h. */
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void
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index_cache::disable ()
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{
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if (debug_index_cache)
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printf_unfiltered ("index cache: disabling\n");
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m_enabled = false;
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}
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/* See dwarf-index-cache.h. */
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void
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index_cache::store (struct dwarf2_per_objfile *dwarf2_per_objfile)
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{
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objfile *obj = dwarf2_per_objfile->objfile;
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if (!enabled ())
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return;
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const bfd_build_id *build_id = build_id_bfd_get (obj->obfd);
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if (build_id == nullptr)
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{
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if (debug_index_cache)
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printf_unfiltered ("index cache: objfile %s has no build id\n",
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objfile_name (obj));
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return;
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}
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if (m_dir.empty ())
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{
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warning (_("The index cache directory name is empty, skipping store."));
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return;
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}
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std::string build_id_str = build_id_to_string (build_id);
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try
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{
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/* Try to create the containing directory. */
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if (!mkdir_recursive (m_dir.c_str ()))
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{
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warning (_("index cache: could not make cache directory: %s\n"),
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safe_strerror (errno));
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return;
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}
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if (debug_index_cache)
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printf_unfiltered ("index cache: writing index cache for objfile %s\n",
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objfile_name (obj));
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/* Write the index itself to the directory, using the build id as the
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filename. */
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write_psymtabs_to_index (dwarf2_per_objfile, m_dir.c_str (),
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build_id_str.c_str (), dw_index_kind::GDB_INDEX);
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}
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catch (const gdb_exception_error &except)
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{
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if (debug_index_cache)
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printf_unfiltered ("index cache: couldn't store index cache for objfile "
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"%s: %s", objfile_name (obj), except.what ());
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}
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}
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#if HAVE_SYS_MMAN_H
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/* Hold the resources for an mmapped index file. */
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struct index_cache_resource_mmap final : public index_cache_resource
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{
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/* Try to mmap FILENAME. Throw an exception on failure, including if the
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file doesn't exist. */
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index_cache_resource_mmap (const char *filename)
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: mapping (mmap_file (filename))
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{}
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scoped_mmap mapping;
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};
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/* See dwarf-index-cache.h. */
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gdb::array_view<const gdb_byte>
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index_cache::lookup_gdb_index (const bfd_build_id *build_id,
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std::unique_ptr<index_cache_resource> *resource)
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{
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if (!enabled ())
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return {};
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if (m_dir.empty ())
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{
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warning (_("The index cache directory name is empty, skipping cache "
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"lookup."));
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return {};
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}
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/* Compute where we would expect a gdb index file for this build id to be. */
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std::string filename = make_index_filename (build_id, INDEX4_SUFFIX);
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try
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{
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if (debug_index_cache)
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printf_unfiltered ("index cache: trying to read %s\n",
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filename.c_str ());
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/* Try to map that file. */
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index_cache_resource_mmap *mmap_resource
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= new index_cache_resource_mmap (filename.c_str ());
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/* Yay, it worked! Hand the resource to the caller. */
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resource->reset (mmap_resource);
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return gdb::array_view<const gdb_byte>
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((const gdb_byte *) mmap_resource->mapping.get (),
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mmap_resource->mapping.size ());
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}
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catch (const gdb_exception_error &except)
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{
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if (debug_index_cache)
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printf_unfiltered ("index cache: couldn't read %s: %s\n",
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filename.c_str (), except.what ());
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}
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return {};
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}
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#else /* !HAVE_SYS_MMAN_H */
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/* See dwarf-index-cache.h. This is a no-op on unsupported systems. */
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gdb::array_view<const gdb_byte>
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index_cache::lookup_gdb_index (const bfd_build_id *build_id,
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std::unique_ptr<index_cache_resource> *resource)
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{
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return {};
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}
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#endif
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/* See dwarf-index-cache.h. */
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std::string
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index_cache::make_index_filename (const bfd_build_id *build_id,
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const char *suffix) const
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{
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std::string build_id_str = build_id_to_string (build_id);
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return m_dir + SLASH_STRING + build_id_str + suffix;
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}
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/* "set index-cache" handler. */
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static void
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set_index_cache_command (const char *arg, int from_tty)
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{
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printf_unfiltered (_("\
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Missing arguments. See \"help set index-cache\" for help.\n"));
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}
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/* True when we are executing "show index-cache". This is used to improve the
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printout a little bit. */
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static bool in_show_index_cache_command = false;
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/* "show index-cache" handler. */
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static void
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show_index_cache_command (const char *arg, int from_tty)
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{
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/* Note that we are executing "show index-cache". */
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auto restore_flag = make_scoped_restore (&in_show_index_cache_command, true);
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/* Call all "show index-cache" subcommands. */
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cmd_show_list (show_index_cache_prefix_list, from_tty, "");
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printf_unfiltered ("\n");
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printf_unfiltered
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(_("The index cache is currently %s.\n"),
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global_index_cache.enabled () ? _("enabled") : _("disabled"));
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}
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/* "set index-cache on" handler. */
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static void
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set_index_cache_on_command (const char *arg, int from_tty)
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{
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global_index_cache.enable ();
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}
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/* "set index-cache off" handler. */
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static void
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set_index_cache_off_command (const char *arg, int from_tty)
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{
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global_index_cache.disable ();
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}
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/* "set index-cache directory" handler. */
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static void
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set_index_cache_directory_command (const char *arg, int from_tty,
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cmd_list_element *element)
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{
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/* Make sure the index cache directory is absolute and tilde-expanded. */
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gdb::unique_xmalloc_ptr<char> abs (gdb_abspath (index_cache_directory));
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xfree (index_cache_directory);
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index_cache_directory = abs.release ();
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global_index_cache.set_directory (index_cache_directory);
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}
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/* "show index-cache stats" handler. */
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static void
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show_index_cache_stats_command (const char *arg, int from_tty)
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{
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const char *indent = "";
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/* If this command is invoked through "show index-cache", make the display a
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bit nicer. */
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if (in_show_index_cache_command)
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{
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indent = " ";
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printf_unfiltered ("\n");
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}
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printf_unfiltered (_("%s Cache hits (this session): %u\n"),
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indent, global_index_cache.n_hits ());
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printf_unfiltered (_("%sCache misses (this session): %u\n"),
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indent, global_index_cache.n_misses ());
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}
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void
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_initialize_index_cache ()
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{
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/* Set the default index cache directory. */
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std::string cache_dir = get_standard_cache_dir ();
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if (!cache_dir.empty ())
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{
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index_cache_directory = xstrdup (cache_dir.c_str ());
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global_index_cache.set_directory (std::move (cache_dir));
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}
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else
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warning (_("Couldn't determine a path for the index cache directory."));
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/* set index-cache */
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add_prefix_cmd ("index-cache", class_files, set_index_cache_command,
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_("Set index-cache options"), &set_index_cache_prefix_list,
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"set index-cache ", false, &setlist);
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/* show index-cache */
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add_prefix_cmd ("index-cache", class_files, show_index_cache_command,
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_("Show index-cache options"), &show_index_cache_prefix_list,
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"show index-cache ", false, &showlist);
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/* set index-cache on */
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add_cmd ("on", class_files, set_index_cache_on_command,
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_("Enable the index cache."), &set_index_cache_prefix_list);
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/* set index-cache off */
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add_cmd ("off", class_files, set_index_cache_off_command,
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_("Disable the index cache."), &set_index_cache_prefix_list);
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/* set index-cache directory */
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add_setshow_filename_cmd ("directory", class_files, &index_cache_directory,
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_("Set the directory of the index cache."),
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_("Show the directory of the index cache."),
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NULL,
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set_index_cache_directory_command, NULL,
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&set_index_cache_prefix_list,
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&show_index_cache_prefix_list);
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/* show index-cache stats */
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add_cmd ("stats", class_files, show_index_cache_stats_command,
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_("Show some stats about the index cache."),
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&show_index_cache_prefix_list);
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/* set debug index-cache */
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add_setshow_boolean_cmd ("index-cache", class_maintenance,
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&debug_index_cache,
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_("Set display of index-cache debug messages."),
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_("Show display of index-cache debug messages."),
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_("\
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When non-zero, debugging output for the index cache is displayed."),
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NULL, NULL,
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&setdebuglist, &showdebuglist);
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}
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