diff options
Diffstat (limited to 'winsup/cygwin/shared.cc')
| -rw-r--r-- | winsup/cygwin/shared.cc | 259 |
1 files changed, 0 insertions, 259 deletions
diff --git a/winsup/cygwin/shared.cc b/winsup/cygwin/shared.cc deleted file mode 100644 index a21aebbe3..000000000 --- a/winsup/cygwin/shared.cc +++ /dev/null @@ -1,259 +0,0 @@ -/* shared.cc: shared data area support. - - Copyright 1996, 1997, 1998, 1999, 2000, 2001, 2002 Red Hat, Inc. - -This file is part of Cygwin. - -This software is a copyrighted work licensed under the terms of the -Cygwin license. Please consult the file "CYGWIN_LICENSE" for -details. */ - -#include "winsup.h" -#include <unistd.h> -#include <stdio.h> -#include <stdlib.h> -#include <grp.h> -#include <pwd.h> -#include <errno.h> -#include "pinfo.h" -#include "security.h" -#include "fhandler.h" -#include "path.h" -#include "dtable.h" -#include "cygerrno.h" -#include "cygheap.h" -#include "heap.h" -#include "shared_info_magic.h" -#include "registry.h" -#include "cygwin_version.h" -#include "child_info.h" - -shared_info NO_COPY *cygwin_shared; -mount_info NO_COPY *mount_table; -HANDLE NO_COPY cygwin_mount_h; - -char * __stdcall -shared_name (const char *str, int num) -{ - static NO_COPY char buf[MAX_PATH] = {0}; - extern bool _cygwin_testing; - - __small_sprintf (buf, "%s.%s.%d", cygwin_version.shared_id, str, num); - if (_cygwin_testing) - strcat (buf, cygwin_version.dll_build_date); - return buf; -} - -#define page_const (65535) -#define pround(n) (((size_t) (n) + page_const) & ~page_const) - -static char *offsets[] = -{ - (char *) cygwin_shared_address, - (char *) cygwin_shared_address - + pround (sizeof (shared_info)), - (char *) cygwin_shared_address - + pround (sizeof (shared_info)) - + pround (sizeof (mount_info)), - (char *) cygwin_shared_address - + pround (sizeof (shared_info)) - + pround (sizeof (mount_info)) - + pround (sizeof (console_state)), - (char *) cygwin_shared_address - + pround (sizeof (shared_info)) - + pround (sizeof (mount_info)) - + pround (sizeof (console_state)) - + pround (sizeof (_pinfo)) -}; - -void * __stdcall -open_shared (const char *name, int n, HANDLE &shared_h, DWORD size, shared_locations m) -{ - void *shared; - - void *addr; - if (!wincap.needs_memory_protection ()) - addr = NULL; - else - { - addr = offsets[m]; - (void) VirtualFree (addr, 0, MEM_RELEASE); - } - - if (!size) - return addr; - - if (!shared_h) - { - char *mapname; - if (!name) - mapname = NULL; - else - { - mapname = shared_name (name, n); - shared_h = OpenFileMappingA (FILE_MAP_READ | FILE_MAP_WRITE, - TRUE, mapname); - } - if (!shared_h && - !(shared_h = CreateFileMapping (INVALID_HANDLE_VALUE, &sec_all, - PAGE_READWRITE, 0, size, mapname))) - api_fatal ("CreateFileMapping, %E. Terminating."); - } - - shared = (shared_info *) - MapViewOfFileEx (shared_h, FILE_MAP_READ | FILE_MAP_WRITE, 0, 0, 0, addr); - - if (!shared) - { - /* Probably win95, so try without specifying the address. */ - shared = (shared_info *) MapViewOfFileEx (shared_h, - FILE_MAP_READ|FILE_MAP_WRITE, - 0, 0, 0, 0); -#ifdef DEBUGGING - if (wincap.is_winnt ()) - system_printf ("relocating shared object %s(%d) from %p to %p on Windows NT", name, n, addr, shared); -#endif - } - - if (!shared) - api_fatal ("MapViewOfFileEx '%s'(%p), %E. Terminating.", name, shared_h); - - if (m == SH_CYGWIN_SHARED && wincap.needs_memory_protection ()) - { - unsigned delta = (char *) shared - offsets[0]; - offsets[0] = (char *) shared; - for (int i = SH_CYGWIN_SHARED + 1; i < SH_TOTAL_SIZE; i++) - { - unsigned size = offsets[i + 1] - offsets[i]; - offsets[i] += delta; - if (!VirtualAlloc (offsets[i], size, MEM_RESERVE, PAGE_NOACCESS)) - continue; /* oh well */ - } - offsets[SH_TOTAL_SIZE] += delta; - -#if 0 - if (!child_proc_info && wincap.needs_memory_protection ()) - for (DWORD s = 0x950000; s <= 0xa40000; s += 0x1000) - VirtualAlloc ((void *) s, 4, MEM_RESERVE, PAGE_NOACCESS); -#endif - } - - debug_printf ("name %s, shared %p (wanted %p), h %p", name, shared, addr, shared_h); - - return shared; -} - -void -shared_info::initialize () -{ - if (version) - { - if (version != SHARED_VERSION_MAGIC) - multiple_cygwin_problem ("shared", version, SHARED_VERSION_MAGIC); - else if (cb != SHARED_INFO_CB) - multiple_cygwin_problem ("shared size", cb, SHARED_INFO_CB); - return; - } - - /* Initialize the queue of deleted files. */ - delqueue.init (); - - /* Initialize tty table. */ - tty.init (); - version = SHARED_VERSION_MAGIC; - cb = sizeof (*this); - if (cb != SHARED_INFO_CB) - system_printf ("size of shared memory region changed from %u to %u", - SHARED_INFO_CB, cb); -} - -void __stdcall -memory_init () -{ - getpagesize (); - /* Initialize general shared memory */ - HANDLE shared_h = cygheap ? cygheap->shared_h : NULL; - cygwin_shared = (shared_info *) open_shared ("shared", - CYGWIN_VERSION_SHARED_DATA, - shared_h, - sizeof (*cygwin_shared), - SH_CYGWIN_SHARED); - - cygwin_shared->initialize (); - - /* Allocate memory for the per-user mount table */ - char user_name[UNLEN + 1]; - DWORD user_name_len = UNLEN + 1; - - if (!GetUserName (user_name, &user_name_len)) - strcpy (user_name, "unknown"); - - /* Initialize the Cygwin heap, if necessary */ - if (!cygheap) - { - cygheap_init (); - cygheap->user.set_name (user_name); - } - - cygheap->shared_h = shared_h; - ProtectHandleINH (cygheap->shared_h); - - heap_init (); - - mount_table = (mount_info *) open_shared (user_name, MOUNT_VERSION, - cygwin_mount_h, sizeof (mount_info), - SH_MOUNT_TABLE); - debug_printf ("opening mount table for '%s' at %p", cygheap->user.name (), - mount_table); - ProtectHandleINH (cygwin_mount_h); - debug_printf ("mount table version %x at %p", mount_table->version, mount_table); - - /* Initialize the Cygwin per-user mount table, if necessary */ - if (!mount_table->version) - { - mount_table->version = MOUNT_VERSION_MAGIC; - debug_printf ("initializing mount table"); - mount_table->cb = sizeof (*mount_table); - if (mount_table->cb != MOUNT_INFO_CB) - system_printf ("size of mount table region changed from %u to %u", - MOUNT_INFO_CB, mount_table->cb); - mount_table->init (); /* Initialize the mount table. */ - } - else if (mount_table->version != MOUNT_VERSION_MAGIC) - multiple_cygwin_problem ("mount", mount_table->version, MOUNT_VERSION); - else if (mount_table->cb != MOUNT_INFO_CB) - multiple_cygwin_problem ("mount table size", mount_table->cb, MOUNT_INFO_CB); - -} - -unsigned -shared_info::heap_chunk_size () -{ - if (!heap_chunk) - { - /* Fetch misc. registry entries. */ - - reg_key reg (KEY_READ, NULL); - - /* Note that reserving a huge amount of heap space does not result in - the use of swap since we are not committing it. */ - /* FIXME: We should not be restricted to a fixed size heap no matter - what the fixed size is. */ - - heap_chunk = reg.get_int ("heap_chunk_in_mb", 0); - if (!heap_chunk) { - reg_key r1 (HKEY_LOCAL_MACHINE, KEY_READ, "SOFTWARE", - CYGWIN_INFO_CYGNUS_REGISTRY_NAME, - CYGWIN_INFO_CYGWIN_REGISTRY_NAME, NULL); - heap_chunk = reg.get_int ("heap_chunk_in_mb", 384); - } - - if (heap_chunk < 4) - heap_chunk = 4 * 1024 * 1024; - else - heap_chunk <<= 20; - debug_printf ("fixed heap size is %u", heap_chunk); - } - - return heap_chunk; -} |