From 0886ad4f53deb8e148f87f77b9e7ff690c02b069 Mon Sep 17 00:00:00 2001
From: Mike Buland <mike@xagasoft.com>
Date: Wed, 28 Aug 2024 11:45:51 -0700
Subject: Most of the new myriad api is in.

Still to go: bootstrapping reading the initial header, saving the
header, growing streams as we write?
---
 src/stable/myriad.h | 24 ++++++++++++++++++++++--
 1 file changed, 22 insertions(+), 2 deletions(-)

(limited to 'src/stable/myriad.h')

diff --git a/src/stable/myriad.h b/src/stable/myriad.h
index 07b4a1d..6d99ee4 100644
--- a/src/stable/myriad.h
+++ b/src/stable/myriad.h
@@ -75,11 +75,14 @@ namespace Bu
         MyriadStream open( StreamId iStream, Mode eMode );
         bool erase( StreamId iStream );
         bool setSize( StreamId iStream, int32_t iNewSize );
+        Bu::String getLocation() const;
 
     private:
         bool loadMyriad();
         void createMyriad( int32_t iBlockSize, int32_t iPreallocateBlocks );
         int32_t allocateBlock();
+        void releaseBlock( int32_t iBlockId, bool bBlank=true );
+        void blankBlock( int32_t iBlockId );
 
         void openStream( StreamId id );
         void closeStream( StreamId id );
@@ -87,7 +90,16 @@ namespace Bu
          * Block restricted read, it will not read past the end of the block
          * that iStart places it in.
          */
-        int32_t blockRead( int32_t iStart, void *pTarget, int32_t iSize );
+        int32_t blockRead( int32_t iBlock, int32_t iStart,
+                void *pTarget, int32_t iSize );
+
+        /**
+         * Block restricted write, it will not write past the end of the block
+         * that iStart places it in. If this returns a non-zero number it's an
+         * indication that you need to allocate a new block.
+         */
+        int32_t blockWrite( int32_t iBlock, int32_t iStart,
+                const void *pTarget, int32_t iSize );
 
     public:
         /**
@@ -103,7 +115,15 @@ namespace Bu
             virtual ~Stream();
 
         public:
+            int32_t getSize() const;
+            int32_t getBlockSize() const;
+            StreamId getStreamId() const;
+            int32_t getOpenCount() const;
+
+            void setSize( int32_t iNewSize );
             int32_t read( int32_t iStart, void *pTarget, int32_t iSize );
+            int32_t write( int32_t iStart, const void *pTarget, int32_t iSize );
+            Bu::String getLocation() const;
 
             /**
              * Doesn't actually open, just increments the open counter.
@@ -134,7 +154,7 @@ namespace Bu
         typedef Bu::Hash<StreamId, Stream *> StreamHash;
 
         typedef Bu::List<int32_t> IndexList;
-        Bu::Mutex mAccess;
+        mutable Bu::Mutex mAccess;
         mutable Bu::Mutex mBacking;
         Bu::Stream &rBacking;
         int32_t iBlockSize;
-- 
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