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Improve documentation.

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This commit is contained in:
Gwenael Treguier 2015-08-08 09:57:07 +02:00
parent 9c415f9c9e
commit 59a4c5593a
1 changed files with 6 additions and 0 deletions
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6
src/trace.rs
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@ -1,3 +1,4 @@
//! Tracing and profiling functions. Error and warning log.
use libc::{c_char, c_int, c_void};
use std::ffi::CString;
use std::ptr;
@ -30,12 +31,16 @@ pub fn log(err_code: c_int, msg: &str) {
}
}
/// The trace callback function signature.
pub type TraceCallback =
Option<extern "C" fn (p_arg: *mut c_void, z_sql: *const c_char)>;
/// The profile callback function signature.
pub type ProfileCallback =
Option<extern "C" fn (p_arg: *mut c_void, z_sql: *const c_char, nanoseconds: u64)>;
impl SqliteConnection {
/// Register or clear a callback function that can be used for tracing the execution of SQL statements.
///
/// Prepared statement placeholders are replaced/logged with their assigned values.
/// There can only be a single tracer defined for each database connection.
/// Setting a new tracer clears the old one.
@ -44,6 +49,7 @@ impl SqliteConnection {
unsafe { ffi::sqlite3_trace(c.db(), x_trace, ptr::null_mut()); }
}
/// Register or clear a callback function that can be used for profiling the execution of SQL statements.
///
/// There can only be a single profiler defined for each database connection.
/// Setting a new profiler clears the old one.
pub fn profile(&mut self, x_profile: ProfileCallback) {