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8254162: Implementation of Foreign-Memory Access API (Third Incubator)

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Reviewed-by: erikj, psandoz, alanb
This commit is contained in:
Maurizio Cimadamore 2020-11-12 16:37:23 +00:00
parent c6ab0fdb15
commit 3e70aac5cc
82 changed files with 6038 additions and 2837 deletions
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6
src/java.base/share/classes/java/nio/Bits.java
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@ -106,7 +106,7 @@ class Bits { // package-private
// These methods should be called whenever direct memory is allocated or
// freed. They allow the user to control the amount of direct memory
// which a process may access. All sizes are specified in bytes.
static void reserveMemory(long size, int cap) {
static void reserveMemory(long size, long cap) {
if (!MEMORY_LIMIT_SET && VM.initLevel() >= 1) {
MAX_MEMORY = VM.maxDirectMemory();
@ -185,7 +185,7 @@ class Bits { // package-private
}
}
private static boolean tryReserveMemory(long size, int cap) {
private static boolean tryReserveMemory(long size, long cap) {
// -XX:MaxDirectMemorySize limits the total capacity rather than the
// actual memory usage, which will differ when buffers are page
@ -203,7 +203,7 @@ class Bits { // package-private
}
static void unreserveMemory(long size, int cap) {
static void unreserveMemory(long size, long cap) {
long cnt = COUNT.decrementAndGet();
long reservedMem = RESERVED_MEMORY.addAndGet(-size);
long totalCap = TOTAL_CAPACITY.addAndGet(-cap);