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node: allocate shared mem for activation

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Allocate a per node a piece of shared memory where we place the
activation structure with the graph state and io_position.
We can then give this info to nodes so that they can get the position
in the graph directly but also later, activate the next node in
the graph.
This commit is contained in:
Wim Taymans 2019-02-07 12:34:54 +01:00
parent db230fc136
commit 658c1da52f
8 changed files with 83 additions and 89 deletions
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16
src/modules/module-client-node/remote-node.c
View file

@ -183,23 +183,25 @@ static void *mem_map(struct node_data *data, struct mapping *map,
pw_map_range_init(&m.map, offset, size, data->core->sc_pagesize);
if (map->ptr == NULL || map->map.offset != m.map.offset || map->map.size != m.map.size) {
map->ptr = mmap(map->ptr, m.map.size, prot, MAP_SHARED, fd, m.map.offset);
if (map->ptr == MAP_FAILED) {
m.ptr = mmap(map->ptr, m.map.size, prot, MAP_SHARED, fd, m.map.offset);
if (m.ptr == MAP_FAILED) {
pw_log_error("remote %p: Failed to mmap memory %d: %m", data, size);
return NULL;
}
map->map = m.map;
map->ptr = m.ptr;
pw_log_debug("remote %p: fd %d map %d %d %p", data, fd, m.map.offset, m.map.size, m.ptr);
}
ptr = SPA_MEMBER(map->ptr, map->map.start, void);
pw_log_debug("remote %p: fd %d mapped %d %d %p", data, fd, offset, size, ptr);
pw_log_debug("remote %p: fd %d ptr %p (%d %d)", data, fd, ptr, offset, size);
return ptr;
}
static void *mem_unmap(struct node_data *data, void *ptr, struct pw_map_range *range)
static void *mem_unmap(struct node_data *data, struct mapping *map)
{
if (ptr != NULL) {
if (munmap(SPA_MEMBER(ptr, -range->start, void), range->size) < 0)
if (map->ptr != NULL) {
if (munmap(map->ptr, map->map.size) < 0)
pw_log_warn("failed to unmap: %m");
}
return NULL;
@ -225,7 +227,7 @@ static void clear_mem(struct node_data *data, struct mem *m)
}
}
if (!has_ref) {
m->map.ptr = mem_unmap(data, m->map.ptr, &m->map.map);
m->map.ptr = mem_unmap(data, &m->map);
close(fd);
}
}