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New type. (glibtop_backend_module): New private type.

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2000-01-12  Martin Baulig  <martin@home-of-linux.org>

	* include/glibtop/backend.h (glibtop_backend_entry): New type.
	(glibtop_backend_module): New private type.

	* lib/backend.c (glibtop_register_backend): This now takes a
	`glibtop_backend_entry' argument, not a `glibtop_backend_info' one.
	(glibtop_backend_by_id): Return a `glibtop_backend_entry' type,
	not a `glibtop_backend_info' one.
	(glibtop_backend_by_name): Likewise.

	* lib/init-backends.c: If we have libxml, read all `.backend' files
	in $(LIBGTOP_BACKEND_DIR), XML parse them and register them via
	`glibtop_backend_register'. This builds a list of all currently
	supported backends without actually loading them into memory.

	* lib/open-backend.c (glibtop_open_backend_l): GModule load the
	backend if it's not already in memory.
This commit is contained in:
Martin Baulig
2000-01-12 20:37:21 +00:00
committed by Martin Baulig
parent 8d532c6298
commit e2e5c3a1cc
6 changed files with 249 additions and 17 deletions
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37
lib/open-backend.c
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@@ -29,14 +29,49 @@
#include <glibtop/backend.h>
#include <gmodule.h>
int
glibtop_open_backend_l (glibtop *server, const char *backend_name,
u_int64_t features, const char **backend_args)
{
glibtop_backend_entry *entry;
glibtop_backend_info *info;
glibtop_backend *backend;
info = glibtop_backend_by_name (backend_name);
entry = glibtop_backend_by_name (backend_name);
if (!entry) return -GLIBTOP_ERROR_NO_SUCH_BACKEND;
if (!entry->_priv) {
entry->_priv = g_new0 (glibtop_backend_module, 1);
entry->_priv->module = g_module_open (entry->shlib_name,
G_MODULE_BIND_LAZY);
if (!entry->_priv->module) {
glibtop_warn_r (server, "Cannot open shared library `%s' "
"for backend `%s'", entry->shlib_name,
entry->name);
return -GLIBTOP_ERROR_NO_SUCH_BACKEND;
}
if (!g_module_symbol (entry->_priv->module,
"LibGTopBackendInfo",
(gpointer*) &entry->info)) {
glibtop_warn_r (server, "Library `%s' is not a valid "
"LibGTop Backend library (start symbol not found)",
entry->shlib_name);
g_module_close (entry->_priv->module);
g_free (entry->_priv);
entry->_priv = NULL;
return -GLIBTOP_ERROR_NO_SUCH_BACKEND;
}
entry->_priv->refcount++;
}
info = entry->info;
if (!info) return -GLIBTOP_ERROR_NO_SUCH_BACKEND;
backend = glibtop_calloc_r (server, 1, sizeof (glibtop_backend));