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authorsanine <sanine.not@pm.me>2022-08-27 23:52:56 -0500
committersanine <sanine.not@pm.me>2022-08-27 23:52:56 -0500
commita4dd0ad63c00f4dee3b86dfd3075d1d61b2b3180 (patch)
tree13bd5bfa15e6fea2a12f176bae79adf9c6fd0933 /3rdparty/plibsys/src/plibraryloader-os2.c
parentbde3e4f1bb7b8f8abca0884a7d994ee1c17a66b1 (diff)
add plibsys
Diffstat (limited to '3rdparty/plibsys/src/plibraryloader-os2.c')
-rw-r--r--3rdparty/plibsys/src/plibraryloader-os2.c155
1 files changed, 155 insertions, 0 deletions
diff --git a/3rdparty/plibsys/src/plibraryloader-os2.c b/3rdparty/plibsys/src/plibraryloader-os2.c
new file mode 100644
index 0000000..0f6c95d
--- /dev/null
+++ b/3rdparty/plibsys/src/plibraryloader-os2.c
@@ -0,0 +1,155 @@
+/*
+ * The MIT License
+ *
+ * Copyright (C) 2017 Alexander Saprykin <saprykin.spb@gmail.com>
+ *
+ * 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.
+ */
+
+#include "perror.h"
+#include "pfile.h"
+#include "plibraryloader.h"
+#include "pmem.h"
+#include "pstring.h"
+
+#define INCL_DOSMODULEMGR
+#define INCL_DOSERRORS
+#include <os2.h>
+
+typedef HMODULE plibrary_handle;
+
+struct PLibraryLoader_ {
+ plibrary_handle handle;
+ APIRET last_error;
+};
+
+static void pp_library_loader_clean_handle (plibrary_handle handle);
+
+static void
+pp_library_loader_clean_handle (plibrary_handle handle)
+{
+ APIRET ulrc;
+
+ while ((ulrc = DosFreeModule (handle)) == ERROR_INTERRUPT)
+ ;
+
+ if (P_UNLIKELY (ulrc != NO_ERROR))
+ P_ERROR ("PLibraryLoader::pp_library_loader_clean_handle: DosFreeModule() failed");
+}
+
+P_LIB_API PLibraryLoader *
+p_library_loader_new (const pchar *path)
+{
+ PLibraryLoader *loader = NULL;
+ plibrary_handle handle = NULLHANDLE;
+ UCHAR load_err[256];
+ APIRET ulrc;
+
+
+ if (!p_file_is_exists (path))
+ return NULL;
+
+ while ((ulrc = DosLoadModule ((PSZ) load_err,
+ sizeof (load_err),
+ (PSZ) path,
+ (PHMODULE) &handle)) == ERROR_INTERRUPT)
+ ;
+
+ if (P_UNLIKELY (ulrc != NO_ERROR)) {
+ P_ERROR ("PLibraryLoader::p_library_loader_new: DosLoadModule() failed");
+ return NULL;
+ }
+
+ if (P_UNLIKELY ((loader = p_malloc0 (sizeof (PLibraryLoader))) == NULL)) {
+ P_ERROR ("PLibraryLoader::p_library_loader_new: failed to allocate memory");
+ pp_library_loader_clean_handle (handle);
+ return NULL;
+ }
+
+ loader->handle = handle;
+ loader->last_error = NO_ERROR;
+
+ return loader;
+}
+
+P_LIB_API PFuncAddr
+p_library_loader_get_symbol (PLibraryLoader *loader, const pchar *sym)
+{
+ PFN func_addr = NULL;
+ APIRET ulrc;
+
+ if (P_UNLIKELY (loader == NULL || sym == NULL || loader->handle == NULL))
+ return NULL;
+
+ if (P_UNLIKELY ((ulrc = DosQueryProcAddr (loader->handle, 0, (PSZ) sym, &func_addr)) != NO_ERROR)) {
+ P_ERROR ("PLibraryLoader::p_library_loader_get_symbol: DosQueryProcAddr() failed");
+ loader->last_error = ulrc;
+ return NULL;
+ }
+
+ loader->last_error = NO_ERROR;
+
+ return (PFuncAddr) func_addr;
+}
+
+P_LIB_API void
+p_library_loader_free (PLibraryLoader *loader)
+{
+ if (P_UNLIKELY (loader == NULL))
+ return;
+
+ pp_library_loader_clean_handle (loader->handle);
+
+ p_free (loader);
+}
+
+P_LIB_API pchar *
+p_library_loader_get_last_error (PLibraryLoader *loader)
+{
+ if (loader == NULL)
+ return NULL;
+
+ switch (loader->last_error) {
+ case NO_ERROR:
+ return NULL;
+ case ERROR_INVALID_HANDLE:
+ return p_strdup ("Invalid resource handler");
+ case ERROR_INVALID_NAME:
+ return p_strdup ("Invalid procedure name");
+ default:
+ return p_strdup ("Unknown error");
+ }
+}
+
+P_LIB_API pboolean
+p_library_loader_is_ref_counted (void)
+{
+ return TRUE;
+}
+
+void
+p_library_loader_init (void)
+{
+}
+
+void
+p_library_loader_shutdown (void)
+{
+}