diff options
Diffstat (limited to 'winsup/cygwin/shared.cc')
-rw-r--r-- | winsup/cygwin/shared.cc | 205 |
1 files changed, 0 insertions, 205 deletions
diff --git a/winsup/cygwin/shared.cc b/winsup/cygwin/shared.cc deleted file mode 100644 index 5c3beb999..000000000 --- a/winsup/cygwin/shared.cc +++ /dev/null @@ -1,205 +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" - -shared_info NO_COPY *cygwin_shared = NULL; -mount_info NO_COPY *mount_table = NULL; -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; -} - -void * __stdcall -open_shared (const char *name, int n, HANDLE &shared_h, DWORD size, void *addr) -{ - void *shared; - - 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); - } - - if (!shared) - api_fatal ("MapViewOfFileEx '%s'(%p), %E. Terminating.", name, shared_h); - - debug_printf ("name %s, shared %p (wanted %p), h %p", name, shared, addr, shared_h); - - /* FIXME: I couldn't find anywhere in the documentation a note about - whether the memory is initialized to zero. The code assumes it does - and since this part seems to be working, we'll leave it as is. */ - return shared; -} - -void -shared_info::initialize () -{ - if (version) - { - if (version != SHARED_VERSION_MAGIC) - multiple_cygwin_problem ("shared", version, SHARED_VERSION); - 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 () -{ - /* 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), - cygwin_shared_address); - - 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); - - getpagesize (); - heap_init (); - mount_table = (mount_info *) open_shared (user_name, MOUNT_VERSION, - cygwin_mount_h, - sizeof (mount_info), 0); - debug_printf ("opening mount table for '%s' at %p", cygheap->user.name (), - mount_table_address); - 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); - -} - -void __stdcall -shared_terminate () -{ - if (cygheap->shared_h) - ForceCloseHandle (cygheap->shared_h); - if (cygwin_mount_h) - ForceCloseHandle (cygwin_mount_h); -} - -unsigned -shared_info::heap_chunk_size () -{ - if (!heap_chunk_in_mb) - { - /* 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_in_mb = reg.get_int ("heap_chunk_in_mb", 256); - if (heap_chunk_in_mb < 4) - { - heap_chunk_in_mb = 4; - reg.set_int ("heap_chunk_in_mb", heap_chunk_in_mb); - } - } - - return heap_chunk_in_mb << 20; -} |