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diff --git a/www/c3ref/c_iocap_atomic.html b/www/c3ref/c_iocap_atomic.html new file mode 100644 index 0000000..b3afb5a --- /dev/null +++ b/www/c3ref/c_iocap_atomic.html @@ -0,0 +1,174 @@ +<!DOCTYPE html> +<html><head> +<meta name="viewport" content="width=device-width, initial-scale=1.0"> +<meta http-equiv="content-type" content="text/html; charset=UTF-8"> +<link href="../sqlite.css" rel="stylesheet"> +<title>Device Characteristics</title> +<!-- path=../ --> +</head> +<body> +<div class=nosearch> +<a href="../index.html"> +<img class="logo" src="../images/sqlite370_banner.gif" alt="SQLite" border="0"> +</a> +<div><!-- IE hack to prevent disappearing logo --></div> +<div class="tagline desktoponly"> +Small. Fast. 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The SQLITE_IOCAP_ATOMICnnn values +mean that writes of blocks that are nnn bytes in size and +are aligned to an address which is an integer multiple of +nnn are atomic. The SQLITE_IOCAP_SAFE_APPEND value means +that when data is appended to a file, the data is appended +first then the size of the file is extended, never the other +way around. The SQLITE_IOCAP_SEQUENTIAL property means that +information is written to disk in the same order as calls +to xWrite(). The SQLITE_IOCAP_POWERSAFE_OVERWRITE property means that +after reboot following a crash or power loss, the only bytes in a +file that were written at the application level might have changed +and that adjacent bytes, even bytes within the same sector are +guaranteed to be unchanged. The SQLITE_IOCAP_UNDELETABLE_WHEN_OPEN +flag indicates that a file cannot be deleted when open. The +SQLITE_IOCAP_IMMUTABLE flag indicates that the file is on +read-only media and cannot be changed even by processes with +elevated privileges.</p> + +<p>The SQLITE_IOCAP_BATCH_ATOMIC property means that the underlying +filesystem supports doing multiple write operations atomically when those +write operations are bracketed by <a href="../c3ref/c_fcntl_begin_atomic_write.html#sqlitefcntlbeginatomicwrite">SQLITE_FCNTL_BEGIN_ATOMIC_WRITE</a> and +<a href="../c3ref/c_fcntl_begin_atomic_write.html#sqlitefcntlcommitatomicwrite">SQLITE_FCNTL_COMMIT_ATOMIC_WRITE</a>. +</p><p>See also lists of + <a href="objlist.html">Objects</a>, + <a href="constlist.html">Constants</a>, and + <a href="funclist.html">Functions</a>.</p> + |