mirror of
https://github.com/varun-r-mallya/sysprof.git
synced 2025-12-31 20:36:25 +00:00
dbb7833cbf
This brings together the two libraries back into one now that the whole design is pretty well sorted out. They depend on roughly the same libraries anyway and it's way easier of the single library can both read and write the capture files (along with bringing in libsysprof-capture symbols in a single place).
115 lines
3.8 KiB
C
115 lines
3.8 KiB
C
/* sysprof-maps-parser.c
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*
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* Copyright 2023 Christian Hergert <chergert@redhat.com>
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*
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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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*
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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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*
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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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*
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* SPDX-License-Identifier: GPL-3.0-or-later
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*/
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#include "config.h"
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#include "sysprof-maps-parser-private.h"
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static GRegex *address_range_regex;
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void
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sysprof_maps_parser_init (SysprofMapsParser *self,
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const char *str,
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gssize len)
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{
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line_reader_init (&self->reader, (char *)str, len);
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if (address_range_regex == NULL)
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address_range_regex = g_regex_new ("^([0-9a-f]+)-([0-9a-f]+) [r\\-][w\\-][x\\-][ps\\-] ([0-9a-f]+) [0-9]{2}:[0-9]{2} ([0-9]+) +(.*)$",
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G_REGEX_OPTIMIZE,
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G_REGEX_MATCH_DEFAULT,
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NULL);
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}
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gboolean
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sysprof_maps_parser_next (SysprofMapsParser *self,
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guint64 *out_begin_addr,
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guint64 *out_end_addr,
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guint64 *out_offset,
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guint64 *out_inode,
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char **out_filename)
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{
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const char *line;
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gsize len;
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while ((line = line_reader_next (&self->reader, &len)))
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{
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g_autoptr(GMatchInfo) match_info = NULL;
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if (g_regex_match_full (address_range_regex, line, len, 0, 0, &match_info, NULL))
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{
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g_autofree char *file = NULL;
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guint64 begin_addr;
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guint64 end_addr;
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guint64 inode;
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guint64 offset;
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gboolean is_vdso;
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int begin_addr_begin;
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int begin_addr_end;
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int end_addr_begin;
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int end_addr_end;
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int offset_begin;
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int offset_end;
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int inode_begin;
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int inode_end;
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int path_begin;
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int path_end;
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if (!g_match_info_fetch_pos (match_info, 1, &begin_addr_begin, &begin_addr_end) ||
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!g_match_info_fetch_pos (match_info, 2, &end_addr_begin, &end_addr_end) ||
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!g_match_info_fetch_pos (match_info, 3, &offset_begin, &offset_end) ||
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!g_match_info_fetch_pos (match_info, 4, &inode_begin, &inode_end) ||
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!g_match_info_fetch_pos (match_info, 5, &path_begin, &path_end))
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continue;
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begin_addr = g_ascii_strtoull (&line[begin_addr_begin], NULL, 16);
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end_addr = g_ascii_strtoull (&line[end_addr_begin], NULL, 16);
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offset = g_ascii_strtoull (&line[offset_begin], NULL, 16);
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inode = g_ascii_strtoull (&line[inode_begin], NULL, 10);
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if (memcmp (" (deleted",
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&line[path_end] - strlen (" (deleted"),
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strlen (" (deleted")) == 0)
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path_end -= strlen (" (deleted)");
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file = g_strndup (&line[path_begin], path_end-path_begin);
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is_vdso = strcmp ("[vdso]", file) == 0;
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if (is_vdso)
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inode = 0;
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if (is_vdso)
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offset = 0;
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*out_begin_addr = begin_addr;
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*out_end_addr = end_addr;
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*out_offset = offset;
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*out_inode = inode;
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*out_filename = g_steal_pointer (&file);
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return TRUE;
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}
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}
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return FALSE;
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}
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