[Qemu-devel] [v5 06/12] arch_init: Add and free data struct for decompression

[Liang Li <liang.z.li@intel.com>]

Define the data structure and variables used to do multiple thread
decompression, and add the code to initialize and free them.

Signed-off-by: Liang Li <liang.z.li@intel.com>
Signed-off-by: Yang Zhang <yang.z.zhang@intel.com>
Reviewed-by: Dr.David Alan Gilbert <dgilbert@redhat.com>
---
 arch_init.c | 13 ++++++++++++-
 1 file changed, 12 insertions(+), 1 deletion(-)

diff --git a/arch_init.c b/arch_init.c
index 7ccad8b..66f4bc1 100644
--- a/arch_init.c
+++ b/arch_init.c
@@ -345,7 +345,12 @@ struct CompressParam {
 typedef struct CompressParam CompressParam;
 
 struct DecompressParam {
-    /* To be done */
+    bool busy;
+    QemuMutex mutex;
+    QemuCond cond;
+    void *des;
+    uint8 *compbuf;
+    int len;
 };
 typedef struct DecompressParam DecompressParam;
 
@@ -1189,6 +1194,9 @@ void migrate_decompress_threads_create(int count)
     compressed_data_buf = g_malloc0(compressBound(TARGET_PAGE_SIZE));
     quit_decomp_thread = false;
     for (i = 0; i < count; i++) {
+        qemu_mutex_init(&decomp_param[i].mutex);
+        qemu_cond_init(&decomp_param[i].cond);
+        decomp_param[i].compbuf = g_malloc0(compressBound(TARGET_PAGE_SIZE));
         qemu_thread_create(decompress_threads + i, "decompress",
                            do_data_decompress, decomp_param + i,
                            QEMU_THREAD_JOINABLE);
@@ -1203,6 +1211,9 @@ void migrate_decompress_threads_join(void)
     thread_count = migrate_decompress_threads();
     for (i = 0; i < thread_count; i++) {
         qemu_thread_join(decompress_threads + i);
+        qemu_mutex_destroy(&decomp_param[i].mutex);
+        qemu_cond_destroy(&decomp_param[i].cond);
+        g_free(decomp_param[i].compbuf);
     }
     g_free(decompress_threads);
     g_free(decomp_param);
-- 
1.9.1