varun-r-mallya/sysprof
1
0
Fork 0
mirror of https://github.com/varun-r-mallya/sysprof.git synced 2025-12-31 20:36:25 +00:00
Code Issues Packages Projects Releases Wiki Activity

sysprofd: add API to get a FD for a file in proc

Browse Source 
This is useful for optimized parsing of proc files such as necessary by
the memory source to seek() back to the start (instead of re-opening a
new file).
This commit is contained in:
Christian Hergert
2019-05-12 16:06:02 -07:00
parent 16bc6f970e
commit 9d72203687
6 changed files with 142 additions and 1 deletions
Download Patch File Download Diff File Expand all files Collapse all files

50
src/libsysprof/sysprof-helpers.c
View File

@ -229,6 +229,56 @@ sysprof_helpers_list_processes_finish (SysprofHelpers *self,
return FALSE;
}
gboolean
sysprof_helpers_get_proc_fd (SysprofHelpers *self,
const gchar *path,
GCancellable *cancellable,
gint *out_fd,
GError **error)
{
g_return_val_if_fail (SYSPROF_IS_HELPERS (self), FALSE);
g_return_val_if_fail (path != NULL, FALSE);
g_return_val_if_fail (!cancellable || G_IS_CANCELLABLE (cancellable), FALSE);
g_return_val_if_fail (out_fd != NULL, FALSE);
*out_fd = -1;
if (self->proxy != NULL)
{
g_autoptr(GVariant) reply = NULL;
g_autoptr(GUnixFDList) out_fd_list = NULL;
reply = g_dbus_proxy_call_with_unix_fd_list_sync (G_DBUS_PROXY (self->proxy),
"GetProcFd",
g_variant_new ("(^ay)", path),
G_DBUS_CALL_FLAGS_NO_AUTO_START,
-1,
NULL,
&out_fd_list,
cancellable,
error);
if (reply != NULL && out_fd_list != NULL)
{
gint handle = -1;
g_variant_get (reply, "(h)", &handle);
if (handle < g_unix_fd_list_get_length (out_fd_list))
{
*out_fd = g_unix_fd_list_get (out_fd_list, handle, error);
return *out_fd != -1;
}
}
}
if (!helpers_get_proc_fd (path, out_fd))
return FALSE;
g_clear_error (error);
return TRUE;
}
static void
sysprof_helpers_get_proc_file_cb (IpcService *service,
GAsyncResult *result,

5
src/libsysprof/sysprof-helpers.h
View File

@ -54,6 +54,11 @@ gboolean sysprof_helpers_list_processes_finish (SysprofHelpers
gint32 **processes,
gsize *n_processes,
GError **error);
gboolean sysprof_helpers_get_proc_fd (SysprofHelpers *self,
const gchar *path,
GCancellable *cancellable,
gint *out_fd,
GError **error);
gboolean sysprof_helpers_get_proc_file (SysprofHelpers *self,
const gchar *path,
GCancellable *cancellable,