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/*
* Copyright 2009 VMware, Inc.
* All Rights Reserved.
*
* 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
* on the rights to use, copy, modify, merge, publish, distribute, sub
* license, 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 (including the next
* paragraph) 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 NON-INFRINGEMENT. IN NO EVENT SHALL
* VMWARE AND/OR THEIR SUPPLIERS 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 "program.h"
#define OP2KEY(o) ((void*)(long)o)
#define KEY2OP(k) ((int16_t)(long)k)
#define SERIAL2KEY(s) ((void*)(unsigned long)s)
#define KEY2SERIAL(k) ((uint32_t)(unsigned long)k)
static guint hash_func(gconstpointer key)
{
return KEY2SERIAL(key);
}
static gboolean equal_func(gconstpointer a, gconstpointer b)
{
return KEY2SERIAL(a) == KEY2SERIAL(b);
}
static void rbug_handle_header_event(struct rbug_header *header, struct program *p)
{
struct rbug_event *e;
gboolean ret;
int16_t op;
void *ptr;
g_assert(header->opcode >= 0);
op = header->opcode;
ptr = g_hash_table_lookup(p->rbug.hash_event, OP2KEY(op));
if (!ptr) {
g_print("unknown event/request with op: %i\n", (int)op);
return;
}
e = (struct rbug_event *)ptr;
ret = e->func(e, header, p);
if (!ret)
g_hash_table_remove(p->rbug.hash_event, OP2KEY(op));
rbug_free_header(header);
}
static void rbug_handle_header_reply(struct rbug_header *header, struct program *p)
{
struct rbug_event *e;
uint32_t serial;
void *ptr;
g_assert(header->opcode < 0);
serial = *(uint32_t*)&header[1];
ptr = g_hash_table_lookup(p->rbug.hash_reply, SERIAL2KEY(serial));
g_hash_table_remove(p->rbug.hash_reply, SERIAL2KEY(serial));
if (!ptr) {
g_print("lost message with id %u\n", serial);
return;
}
e = (struct rbug_event *)ptr;
e->func(e, header, p);
rbug_free_header(header);
}
static gboolean rbug_event(GIOChannel *channel, GIOCondition c, gpointer data)
{
struct program *p = (struct program *)data;
struct rbug_connection *con = p->rbug.con;
struct rbug_header *header;
(void)channel;
if (c & (G_IO_IN | G_IO_PRI)) {
header = rbug_get_message(con, NULL);
if (!header) {
main_quit(p);
return false;
}
if (header->opcode >= 0)
rbug_handle_header_event(header, p);
else
rbug_handle_header_reply(header, p);
}
if (c & (G_IO_ERR | G_IO_HUP | G_IO_NVAL)) {
main_quit(p);
return false;
}
return true;
}
/*
* exported
*/
void rbug_finish_and_emit_events(struct program *p)
{
struct rbug_connection *con = p->rbug.con;
struct rbug_header *header;
uint32_t serial;
rbug_send_ping(con, &serial);
do {
header = rbug_get_message(con, NULL);
if (!header) {
g_print("Connection problems\n");
break;
}
if (header->opcode < 0) {
uint32_t s =*(uint32_t*)(&header[1]);
if (s == serial) {
break;
} else if (s > serial) {
g_print("Bad bad bad lost message that we waited for\n");
break;
}
}
if (header->opcode >= 0)
rbug_handle_header_event(header, p);
else
rbug_handle_header_reply(header, p);
header = NULL;
} while (1);
if (header && header->opcode != RBUG_OP_PING_REPLY) {
g_print("Bad bad bad reply which we waited for was not ping\n");
}
rbug_free_header(header);
}
void rbug_add_reply(struct rbug_event *e, uint32_t serial, struct program *p)
{
g_hash_table_insert(p->rbug.hash_reply, SERIAL2KEY(serial), e);
}
void rbug_add_event(struct rbug_event *e, int16_t op, struct program *p)
{
g_hash_table_insert(p->rbug.hash_event, OP2KEY(op), e);
}
void rbug_glib_io_watch(struct program *p)
{
gint mask = (G_IO_IN | G_IO_PRI | G_IO_ERR | G_IO_HUP | G_IO_NVAL);
p->rbug.channel = g_io_channel_unix_new(p->rbug.socket);
p->rbug.event = g_io_add_watch(p->rbug.channel, mask, rbug_event, p);
g_io_channel_set_encoding(p->rbug.channel, NULL, NULL);
p->rbug.hash_event = g_hash_table_new(hash_func, equal_func);
p->rbug.hash_reply = g_hash_table_new(hash_func, equal_func);
}
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