| /* ----------------------------------------------------------------------- * |
| * |
| * Copyright 2007-2009 H. Peter Anvin - All Rights Reserved |
| * Copyright 2009 H. Peter Anvin - All Rights Reserved |
| * |
| * Permission is hereby granted, free of charge, to any person |
| * obtaining a copy of this software and associated documentation |
| * files (the "Software"), to deal in the Software without |
| * restriction, including without limitation the rights to use, |
| * copy, modify, merge, publish, distribute, sublicense, and/or |
| * sell copies of the Software, and to permit persons to whom |
| * the Software is furnished to do so, subject to the following |
| * conditions: |
| * |
| * The above copyright notice and this permission notice shall |
| * be included in all copies or substantial portions of the Software. |
| * |
| * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, |
| * EXPRESS OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES |
| * OF MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND |
| * NONINFRINGEMENT. IN NO EVENT SHALL THE AUTHORS OR COPYRIGHT |
| * HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY, |
| * WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING |
| * FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR |
| * OTHER DEALINGS IN THE SOFTWARE. |
| * |
| * ----------------------------------------------------------------------- */ |
| |
| /* |
| * memscan.c |
| * |
| * Query the system for free memory |
| */ |
| |
| #include <syslinux/memscan.h> |
| |
| static LIST_HEAD(syslinux_memscan_head); |
| |
| /* |
| * Add a memscan entry to the list. |
| */ |
| void syslinux_memscan_add(struct syslinux_memscan *entry) |
| { |
| list_add(&entry->next, &syslinux_memscan_head); |
| } |
| |
| /* |
| * Build a new memscan entry and add it to the list. |
| */ |
| int syslinux_memscan_new(int func(scan_memory_callback_t, void *data)) |
| { |
| struct syslinux_memscan *entry; |
| |
| entry = malloc(sizeof *entry); |
| if (!entry) |
| return -1; |
| |
| entry->func = func; |
| syslinux_memscan_add(entry); |
| return 0; |
| } |
| |
| int syslinux_scan_memory(scan_memory_callback_t callback, void *data) |
| { |
| struct syslinux_memscan *entry; |
| int rv = 0; |
| |
| list_for_each_entry(entry, &syslinux_memscan_head, next) { |
| rv = entry->func(callback, data); |
| if (rv) |
| break; |
| } |
| |
| return rv; |
| } |