1 files changed, 29 insertions, 0 deletions
diff --git a/Modules/_zstd/zstddict.h b/Modules/_zstd/zstddict.h
new file mode 100644
index 00000000000..4a403416dbd
--- /dev/null
+++ b/Modules/_zstd/zstddict.h
@@ -0,0 +1,29 @@
+/* Low level interface to the Zstandard algorthm & the zstd library. */
+
+#ifndef ZSTD_DICT_H
+#define ZSTD_DICT_H
+
+#include <zstd.h>                 // ZSTD_DDict
+
+typedef struct {
+    PyObject_HEAD
+
+    /* Reusable compress/decompress dictionary, they are created once and
+       can be shared by multiple threads concurrently, since its usage is
+       read-only.
+       c_dicts is a dict, int(compressionLevel):PyCapsule(ZSTD_CDict*) */
+    ZSTD_DDict *d_dict;
+    PyObject *c_dicts;
+
+    /* Dictionary content. */
+    char *dict_buffer;
+    Py_ssize_t dict_len;
+
+    /* Dictionary id */
+    uint32_t dict_id;
+
+    /* Lock to protect the digested dictionaries */
+    PyMutex lock;
+} ZstdDict;
+
+#endif  // !ZSTD_DICT_H