[virglrenderer-devel] [PATCH 1/1] vtest: command dispatch now uses a jump-table
Nathan Gauër
nathan.gauer at lse.epita.fr
Mon Jun 4 12:42:28 UTC 2018
removed the switch and goto based loop.
To add a command, create the corresponding define in vtest_protocol.h and
an entry in the jump-table (vrend_server.c).
Signed-off-by: Nathan Gauër <nathan.gauer at lse.epita.fr>
---
vtest/vtest.h | 11 ++---
vtest/vtest_renderer.c | 17 +++++--
vtest/vtest_server.c | 108 ++++++++++++++++++++++-------------------
3 files changed, 75 insertions(+), 61 deletions(-)
diff --git a/vtest/vtest.h b/vtest/vtest.h
index deb6618..6b1d91d 100644
--- a/vtest/vtest.h
+++ b/vtest/vtest.h
@@ -27,10 +27,10 @@
#include <errno.h>
int vtest_create_renderer(int in_fd, int out_fd, uint32_t length);
-int vtest_send_caps(void);
+int vtest_send_caps(uint32_t length_dw);
-int vtest_create_resource(void);
-int vtest_resource_unref(void);
+int vtest_create_resource(uint32_t length_dw);
+int vtest_resource_unref(uint32_t length_dw);
int vtest_submit_cmd(uint32_t length_dw);
int vtest_transfer_get(uint32_t length_dw);
@@ -38,10 +38,9 @@ int vtest_transfer_put(uint32_t length_dw);
int vtest_block_read(int fd, void *buf, int size);
-int vtest_resource_busy_wait(void);
-int vtest_renderer_create_fence(void);
+int vtest_resource_busy_wait(uint32_t length_dw);
+int vtest_renderer_create_fence(uint32_t length_dw);
int vtest_poll(void);
void vtest_destroy_renderer(void);
#endif
-
diff --git a/vtest/vtest_renderer.c b/vtest/vtest_renderer.c
index 3b8fe1a..fb34955 100644
--- a/vtest/vtest_renderer.c
+++ b/vtest/vtest_renderer.c
@@ -35,6 +35,8 @@
#include "vtest_protocol.h"
#include "util.h"
+#define UNUSED_PARAMETER(Param) (void)Param
+
static int ctx_id = 1;
static int fence_id = 1;
@@ -153,8 +155,9 @@ void vtest_destroy_renderer(void)
renderer.out_fd = -1;
}
-int vtest_send_caps(void)
+int vtest_send_caps(uint32_t length_dw)
{
+ UNUSED_PARAMETER(length_dw);
uint32_t max_ver, max_size;
void *caps_buf;
uint32_t hdr_buf[2];
@@ -182,8 +185,9 @@ end:
return 0;
}
-int vtest_create_resource(void)
+int vtest_create_resource(uint32_t length_dw)
{
+ UNUSED_PARAMETER(length_dw);
uint32_t res_create_buf[VCMD_RES_CREATE_SIZE];
struct virgl_renderer_resource_create_args args;
int ret;
@@ -211,8 +215,9 @@ int vtest_create_resource(void)
return ret;
}
-int vtest_resource_unref(void)
+int vtest_resource_unref(uint32_t length_dw)
{
+ UNUSED_PARAMETER(length_dw);
uint32_t res_unref_buf[VCMD_RES_UNREF_SIZE];
int ret;
uint32_t handle;
@@ -347,8 +352,9 @@ int vtest_transfer_put(uint32_t length_dw)
return 0;
}
-int vtest_resource_busy_wait(void)
+int vtest_resource_busy_wait(uint32_t length_dw)
{
+ UNUSED_PARAMETER(length_dw);
uint32_t bw_buf[VCMD_BUSY_WAIT_SIZE];
int ret, fd;
int flags;
@@ -392,8 +398,9 @@ int vtest_resource_busy_wait(void)
return 0;
}
-int vtest_renderer_create_fence(void)
+int vtest_renderer_create_fence(uint32_t length_dw)
{
+ UNUSED_PARAMETER(length_dw);
virgl_renderer_create_fence(fence_id++, ctx_id);
return 0;
}
diff --git a/vtest/vtest_server.c b/vtest/vtest_server.c
index 918639b..d9b8077 100644
--- a/vtest/vtest_server.c
+++ b/vtest/vtest_server.c
@@ -86,67 +86,75 @@ static int wait_for_socket_accept(int sock)
return -1;
}
+static int (*_commands_ftable[])(uint32_t length_dw) = {
+ NULL /* CMD ids starts at 1 */,
+ vtest_send_caps,
+ vtest_create_resource,
+ vtest_resource_unref,
+ vtest_transfer_get,
+ vtest_transfer_put,
+ vtest_submit_cmd,
+ vtest_resource_busy_wait,
+ NULL /* vtest_create_renderer */,
+};
+
static int run_renderer(int in_fd, int out_fd)
{
+#define COMMAND_COUNT (sizeof(_commands_ftable) / sizeof(*_commands_ftable))
+
int ret;
uint32_t header[VTEST_HDR_SIZE];
bool inited = false;
-again:
- ret = vtest_wait_for_fd_read(in_fd);
- if (ret < 0)
- goto fail;
-
- ret = vtest_block_read(in_fd, &header, sizeof(header));
-
- if (ret == 8) {
- if (!inited) {
- if (header[1] != VCMD_CREATE_RENDERER)
- goto fail;
- ret = vtest_create_renderer(in_fd, out_fd, header[0]);
- inited = true;
- }
- vtest_poll();
- switch (header[1]) {
- case VCMD_GET_CAPS:
- ret = vtest_send_caps();
- break;
- case VCMD_RESOURCE_CREATE:
- ret = vtest_create_resource();
- break;
- case VCMD_RESOURCE_UNREF:
- ret = vtest_resource_unref();
- break;
- case VCMD_SUBMIT_CMD:
- ret = vtest_submit_cmd(header[0]);
- break;
- case VCMD_TRANSFER_GET:
- ret = vtest_transfer_get(header[0]);
- break;
- case VCMD_TRANSFER_PUT:
- ret = vtest_transfer_put(header[0]);
- break;
- case VCMD_RESOURCE_BUSY_WAIT:
- vtest_renderer_create_fence();
- ret = vtest_resource_busy_wait();
- break;
- default:
- break;
- }
- if (ret < 0) {
- goto fail;
- }
+ do {
+ ret = vtest_wait_for_fd_read(in_fd);
+ if (ret < 0) {
+ break;
+ }
+
+ ret = vtest_block_read(in_fd, &header, sizeof(header));
+ if (ret != 8) {
+ break;
+ }
+
+ if (!inited) {
+ /* The first command MUST be VCMD_CREATE_RENDERER */
+ if (header[1] != VCMD_CREATE_RENDERER) {
+ break;
+ }
+
+ ret = vtest_create_renderer(in_fd, out_fd, header[0]);
+ inited = true;
+ vtest_poll();
+ continue;
+ }
+
+ vtest_poll();
+ if (header[1] <= 0 || header[1] > COMMAND_COUNT) {
+ break;
+ }
+
+ /* only specific case to handle */
+ if (header[1] == VCMD_RESOURCE_BUSY_WAIT) {
+ vtest_renderer_create_fence(header[0]);
+ }
+
+ if (_commands_ftable[header[1]] == NULL) {
+ break;
+ }
+
+ ret = _commands_ftable[header[1]](header[0]);
+ if (ret < 0) {
+ break;
+ }
+ } while (1);
- goto again;
- }
- if (ret <= 0) {
- goto fail;
- }
-fail:
fprintf(stderr, "socket failed - closing renderer\n");
+
vtest_destroy_renderer();
close(in_fd);
return 0;
+#undef COMMAND_COUNT
}
int main(int argc, char **argv)
--
2.17.0
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