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https://github.com/varun-r-mallya/sysprof.git
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dd821b48e8
We were not getting the proper value for time. We need sample_id_all set according to my cursory reading of the core.c in the kernel. Also, the time is aligned to 64-bit (after the comm field).
133 lines
4.3 KiB
C
133 lines
4.3 KiB
C
/* sp-perf-counter.h
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*
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* Copyright (C) 2016 Christian Hergert <chergert@redhat.com>
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*
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* This program is free software: you can redistribute it and/or modify
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* it under the terms of the GNU General Public License as published by
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* the Free Software Foundation, either version 3 of the License, or
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* (at your option) any later version.
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*
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* This program is distributed in the hope that it will be useful,
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* but WITHOUT ANY WARRANTY; without even the implied warranty of
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* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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* GNU General Public License for more details.
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*
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* You should have received a copy of the GNU General Public License
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* along with this program. If not, see <http://www.gnu.org/licenses/>.
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*/
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#ifndef SP_PERF_COUNTER_H
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#define SP_PERF_COUNTER_H
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#include <gio/gio.h>
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#include <linux/perf_event.h>
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G_BEGIN_DECLS
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#define SP_TYPE_PERF_COUNTER (sp_perf_counter_get_type())
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typedef struct _SpPerfCounter SpPerfCounter;
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#pragma pack(push, 1)
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typedef struct
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{
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struct perf_event_header header;
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guint32 pid;
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guint32 ppid;
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guint32 tid;
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guint32 ptid;
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guint64 time;
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} SpPerfCounterEventFork;
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typedef struct
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{
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struct perf_event_header header;
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guint32 pid;
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guint32 tid;
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gchar comm[0];
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} SpPerfCounterEventComm;
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typedef struct
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{
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struct perf_event_header header;
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guint32 pid;
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guint32 ppid;
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guint32 tid;
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guint32 ptid;
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guint64 time;
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} SpPerfCounterEventExit;
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typedef struct
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{
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struct perf_event_header header;
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guint32 pid;
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guint32 tid;
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guint64 addr;
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guint64 len;
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guint64 pgoff;
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char filename[0];
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} SpPerfCounterEventMmap;
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typedef struct
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{
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struct perf_event_header header;
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guint64 ip;
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guint32 pid;
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guint32 tid;
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guint64 time;
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guint64 n_ips;
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guint64 ips[0];
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} SpPerfCounterEventSample;
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typedef union
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{
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struct perf_event_header header;
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guint8 raw[0];
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SpPerfCounterEventFork fork;
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SpPerfCounterEventComm comm;
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SpPerfCounterEventExit exit;
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SpPerfCounterEventMmap mmap;
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SpPerfCounterEventSample sample;
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} SpPerfCounterEvent;
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#pragma pack(pop)
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typedef void (*SpPerfCounterCallback) (SpPerfCounterEvent *event,
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guint cpu,
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gpointer user_data);
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void sp_perf_counter_authorize_async (GCancellable *cancellable,
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GAsyncReadyCallback callback,
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gpointer user_data);
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gboolean sp_perf_counter_authorize_finish (GAsyncResult *result,
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GError **error);
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GType sp_perf_counter_get_type (void);
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SpPerfCounter *sp_perf_counter_new (GMainContext *context);
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void sp_perf_counter_set_callback (SpPerfCounter *self,
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SpPerfCounterCallback callback,
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gpointer callback_data,
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GDestroyNotify callback_data_destroy);
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void sp_perf_counter_add_pid (SpPerfCounter *self,
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GPid pid);
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gint sp_perf_counter_open (SpPerfCounter *self,
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struct perf_event_attr *attr,
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GPid pid,
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gint cpu,
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gint group_fd,
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gulong flags);
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void sp_perf_counter_take_fd (SpPerfCounter *self,
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int fd);
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void sp_perf_counter_enable (SpPerfCounter *self);
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void sp_perf_counter_disable (SpPerfCounter *self);
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void sp_perf_counter_close (SpPerfCounter *self,
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gint fd);
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SpPerfCounter *sp_perf_counter_ref (SpPerfCounter *self);
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void sp_perf_counter_unref (SpPerfCounter *self);
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G_END_DECLS
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#endif /* SP_PERF_COUNTER_H */
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