Java Code Examples for sun.misc.SharedSecrets#getJavaLangRefAccess()

The following examples show how to use sun.misc.SharedSecrets#getJavaLangRefAccess() . These examples are extracted from open source projects. You can vote up the ones you like or vote down the ones you don't like, and go to the original project or source file by following the links above each example. You may check out the related API usage on the sidebar.
Example 1
Source Project: jdk1.8-source-analysis   File: Bits.java    License: Apache License 2.0 4 votes vote down vote up
static void reserveMemory(long size, int cap) {

        if (!memoryLimitSet && VM.isBooted()) {
            maxMemory = VM.maxDirectMemory();
            memoryLimitSet = true;
        }

        // optimist!
        if (tryReserveMemory(size, cap)) {
            return;
        }

        final JavaLangRefAccess jlra = SharedSecrets.getJavaLangRefAccess();

        // retry while helping enqueue pending Reference objects
        // which includes executing pending Cleaner(s) which includes
        // Cleaner(s) that free direct buffer memory
        while (jlra.tryHandlePendingReference()) {
            if (tryReserveMemory(size, cap)) {
                return;
            }
        }

        // trigger VM's Reference processing
        System.gc();

        // a retry loop with exponential back-off delays
        // (this gives VM some time to do it's job)
        boolean interrupted = false;
        try {
            long sleepTime = 1;
            int sleeps = 0;
            while (true) {
                if (tryReserveMemory(size, cap)) {
                    return;
                }
                if (sleeps >= MAX_SLEEPS) {
                    break;
                }
                if (!jlra.tryHandlePendingReference()) {
                    try {
                        Thread.sleep(sleepTime);
                        sleepTime <<= 1;
                        sleeps++;
                    } catch (InterruptedException e) {
                        interrupted = true;
                    }
                }
            }

            // no luck
            throw new OutOfMemoryError("Direct buffer memory");

        } finally {
            if (interrupted) {
                // don't swallow interrupts
                Thread.currentThread().interrupt();
            }
        }
    }
 
Example 2
static void reserveMemory(long size, int cap) {

        if (!memoryLimitSet && VM.isBooted()) {
            maxMemory = VM.maxDirectMemory();
            memoryLimitSet = true;
        }

        // optimist!
        if (tryReserveMemory(size, cap)) {
            return;
        }

        final JavaLangRefAccess jlra = SharedSecrets.getJavaLangRefAccess();

        // retry while helping enqueue pending Reference objects
        // which includes executing pending Cleaner(s) which includes
        // Cleaner(s) that free direct buffer memory
        while (jlra.tryHandlePendingReference()) {
            if (tryReserveMemory(size, cap)) {
                return;
            }
        }

        // trigger VM's Reference processing
        System.gc();

        // a retry loop with exponential back-off delays
        // (this gives VM some time to do it's job)
        boolean interrupted = false;
        try {
            long sleepTime = 1;
            int sleeps = 0;
            while (true) {
                if (tryReserveMemory(size, cap)) {
                    return;
                }
                if (sleeps >= MAX_SLEEPS) {
                    break;
                }
                if (!jlra.tryHandlePendingReference()) {
                    try {
                        Thread.sleep(sleepTime);
                        sleepTime <<= 1;
                        sleeps++;
                    } catch (InterruptedException e) {
                        interrupted = true;
                    }
                }
            }

            // no luck
            throw new OutOfMemoryError("Direct buffer memory");

        } finally {
            if (interrupted) {
                // don't swallow interrupts
                Thread.currentThread().interrupt();
            }
        }
    }
 
Example 3
Source Project: TencentKona-8   File: Bits.java    License: GNU General Public License v2.0 4 votes vote down vote up
static void reserveMemory(long size, int cap) {

        if (!memoryLimitSet && VM.isBooted()) {
            maxMemory = VM.maxDirectMemory();
            memoryLimitSet = true;
        }

        // optimist!
        if (tryReserveMemory(size, cap)) {
            return;
        }

        final JavaLangRefAccess jlra = SharedSecrets.getJavaLangRefAccess();

        // retry while helping enqueue pending Reference objects
        // which includes executing pending Cleaner(s) which includes
        // Cleaner(s) that free direct buffer memory
        while (jlra.tryHandlePendingReference()) {
            if (tryReserveMemory(size, cap)) {
                return;
            }
        }

        // trigger VM's Reference processing
        System.gc();

        // a retry loop with exponential back-off delays
        // (this gives VM some time to do it's job)
        boolean interrupted = false;
        try {
            long sleepTime = 1;
            int sleeps = 0;
            while (true) {
                if (tryReserveMemory(size, cap)) {
                    return;
                }
                if (sleeps >= MAX_SLEEPS) {
                    break;
                }
                if (!jlra.tryHandlePendingReference()) {
                    try {
                        Thread.sleep(sleepTime);
                        sleepTime <<= 1;
                        sleeps++;
                    } catch (InterruptedException e) {
                        interrupted = true;
                    }
                }
            }

            // no luck
            throw new OutOfMemoryError("Direct buffer memory");

        } finally {
            if (interrupted) {
                // don't swallow interrupts
                Thread.currentThread().interrupt();
            }
        }
    }
 
Example 4
Source Project: JDKSourceCode1.8   File: Bits.java    License: MIT License 4 votes vote down vote up
static void reserveMemory(long size, int cap) {

        if (!memoryLimitSet && VM.isBooted()) {
            maxMemory = VM.maxDirectMemory();
            memoryLimitSet = true;
        }

        // optimist!
        if (tryReserveMemory(size, cap)) {
            return;
        }

        final JavaLangRefAccess jlra = SharedSecrets.getJavaLangRefAccess();

        // retry while helping enqueue pending Reference objects
        // which includes executing pending Cleaner(s) which includes
        // Cleaner(s) that free direct buffer memory
        while (jlra.tryHandlePendingReference()) {
            if (tryReserveMemory(size, cap)) {
                return;
            }
        }

        // trigger VM's Reference processing
        System.gc();

        // a retry loop with exponential back-off delays
        // (this gives VM some time to do it's job)
        boolean interrupted = false;
        try {
            long sleepTime = 1;
            int sleeps = 0;
            while (true) {
                if (tryReserveMemory(size, cap)) {
                    return;
                }
                if (sleeps >= MAX_SLEEPS) {
                    break;
                }
                if (!jlra.tryHandlePendingReference()) {
                    try {
                        Thread.sleep(sleepTime);
                        sleepTime <<= 1;
                        sleeps++;
                    } catch (InterruptedException e) {
                        interrupted = true;
                    }
                }
            }

            // no luck
            throw new OutOfMemoryError("Direct buffer memory");

        } finally {
            if (interrupted) {
                // don't swallow interrupts
                Thread.currentThread().interrupt();
            }
        }
    }
 
Example 5
Source Project: openjdk-jdk8u   File: Bits.java    License: GNU General Public License v2.0 4 votes vote down vote up
static void reserveMemory(long size, int cap) {

        if (!memoryLimitSet && VM.isBooted()) {
            maxMemory = VM.maxDirectMemory();
            memoryLimitSet = true;
        }

        // optimist!
        if (tryReserveMemory(size, cap)) {
            return;
        }

        final JavaLangRefAccess jlra = SharedSecrets.getJavaLangRefAccess();

        // retry while helping enqueue pending Reference objects
        // which includes executing pending Cleaner(s) which includes
        // Cleaner(s) that free direct buffer memory
        while (jlra.tryHandlePendingReference()) {
            if (tryReserveMemory(size, cap)) {
                return;
            }
        }

        // trigger VM's Reference processing
        System.gc();

        // a retry loop with exponential back-off delays
        // (this gives VM some time to do it's job)
        boolean interrupted = false;
        try {
            long sleepTime = 1;
            int sleeps = 0;
            while (true) {
                if (tryReserveMemory(size, cap)) {
                    return;
                }
                if (sleeps >= MAX_SLEEPS) {
                    break;
                }
                if (!jlra.tryHandlePendingReference()) {
                    try {
                        Thread.sleep(sleepTime);
                        sleepTime <<= 1;
                        sleeps++;
                    } catch (InterruptedException e) {
                        interrupted = true;
                    }
                }
            }

            // no luck
            throw new OutOfMemoryError("Direct buffer memory");

        } finally {
            if (interrupted) {
                // don't swallow interrupts
                Thread.currentThread().interrupt();
            }
        }
    }
 
Example 6
static void reserveMemory(long size, int cap) {

        if (!memoryLimitSet && VM.isBooted()) {
            maxMemory = VM.maxDirectMemory();
            memoryLimitSet = true;
        }

        // optimist!
        if (tryReserveMemory(size, cap)) {
            return;
        }

        final JavaLangRefAccess jlra = SharedSecrets.getJavaLangRefAccess();

        // retry while helping enqueue pending Reference objects
        // which includes executing pending Cleaner(s) which includes
        // Cleaner(s) that free direct buffer memory
        while (jlra.tryHandlePendingReference()) {
            if (tryReserveMemory(size, cap)) {
                return;
            }
        }

        // trigger VM's Reference processing
        System.gc();

        // a retry loop with exponential back-off delays
        // (this gives VM some time to do it's job)
        boolean interrupted = false;
        try {
            long sleepTime = 1;
            int sleeps = 0;
            while (true) {
                if (tryReserveMemory(size, cap)) {
                    return;
                }
                if (sleeps >= MAX_SLEEPS) {
                    break;
                }
                if (!jlra.tryHandlePendingReference()) {
                    try {
                        Thread.sleep(sleepTime);
                        sleepTime <<= 1;
                        sleeps++;
                    } catch (InterruptedException e) {
                        interrupted = true;
                    }
                }
            }

            // no luck
            throw new OutOfMemoryError("Direct buffer memory");

        } finally {
            if (interrupted) {
                // don't swallow interrupts
                Thread.currentThread().interrupt();
            }
        }
    }
 
Example 7
Source Project: jdk8u-jdk   File: Bits.java    License: GNU General Public License v2.0 4 votes vote down vote up
static void reserveMemory(long size, int cap) {

        if (!memoryLimitSet && VM.isBooted()) {
            maxMemory = VM.maxDirectMemory();
            memoryLimitSet = true;
        }

        // optimist!
        if (tryReserveMemory(size, cap)) {
            return;
        }

        final JavaLangRefAccess jlra = SharedSecrets.getJavaLangRefAccess();

        // retry while helping enqueue pending Reference objects
        // which includes executing pending Cleaner(s) which includes
        // Cleaner(s) that free direct buffer memory
        while (jlra.tryHandlePendingReference()) {
            if (tryReserveMemory(size, cap)) {
                return;
            }
        }

        // trigger VM's Reference processing
        System.gc();

        // a retry loop with exponential back-off delays
        // (this gives VM some time to do it's job)
        boolean interrupted = false;
        try {
            long sleepTime = 1;
            int sleeps = 0;
            while (true) {
                if (tryReserveMemory(size, cap)) {
                    return;
                }
                if (sleeps >= MAX_SLEEPS) {
                    break;
                }
                if (!jlra.tryHandlePendingReference()) {
                    try {
                        Thread.sleep(sleepTime);
                        sleepTime <<= 1;
                        sleeps++;
                    } catch (InterruptedException e) {
                        interrupted = true;
                    }
                }
            }

            // no luck
            throw new OutOfMemoryError("Direct buffer memory");

        } finally {
            if (interrupted) {
                // don't swallow interrupts
                Thread.currentThread().interrupt();
            }
        }
    }
 
Example 8
Source Project: hottub   File: Bits.java    License: GNU General Public License v2.0 4 votes vote down vote up
static void reserveMemory(long size, int cap) {

        if (!memoryLimitSet && VM.isBooted()) {
            maxMemory = VM.maxDirectMemory();
            memoryLimitSet = true;
        }

        // optimist!
        if (tryReserveMemory(size, cap)) {
            return;
        }

        final JavaLangRefAccess jlra = SharedSecrets.getJavaLangRefAccess();

        // retry while helping enqueue pending Reference objects
        // which includes executing pending Cleaner(s) which includes
        // Cleaner(s) that free direct buffer memory
        while (jlra.tryHandlePendingReference()) {
            if (tryReserveMemory(size, cap)) {
                return;
            }
        }

        // trigger VM's Reference processing
        System.gc();

        // a retry loop with exponential back-off delays
        // (this gives VM some time to do it's job)
        boolean interrupted = false;
        try {
            long sleepTime = 1;
            int sleeps = 0;
            while (true) {
                if (tryReserveMemory(size, cap)) {
                    return;
                }
                if (sleeps >= MAX_SLEEPS) {
                    break;
                }
                if (!jlra.tryHandlePendingReference()) {
                    try {
                        Thread.sleep(sleepTime);
                        sleepTime <<= 1;
                        sleeps++;
                    } catch (InterruptedException e) {
                        interrupted = true;
                    }
                }
            }

            // no luck
            throw new OutOfMemoryError("Direct buffer memory");

        } finally {
            if (interrupted) {
                // don't swallow interrupts
                Thread.currentThread().interrupt();
            }
        }
    }
 
Example 9
Source Project: jdk8u_jdk   File: Bits.java    License: GNU General Public License v2.0 4 votes vote down vote up
static void reserveMemory(long size, int cap) {

        if (!memoryLimitSet && VM.isBooted()) {
            maxMemory = VM.maxDirectMemory();
            memoryLimitSet = true;
        }

        // optimist!
        if (tryReserveMemory(size, cap)) {
            return;
        }

        final JavaLangRefAccess jlra = SharedSecrets.getJavaLangRefAccess();

        // retry while helping enqueue pending Reference objects
        // which includes executing pending Cleaner(s) which includes
        // Cleaner(s) that free direct buffer memory
        while (jlra.tryHandlePendingReference()) {
            if (tryReserveMemory(size, cap)) {
                return;
            }
        }

        // trigger VM's Reference processing
        System.gc();

        // a retry loop with exponential back-off delays
        // (this gives VM some time to do it's job)
        boolean interrupted = false;
        try {
            long sleepTime = 1;
            int sleeps = 0;
            while (true) {
                if (tryReserveMemory(size, cap)) {
                    return;
                }
                if (sleeps >= MAX_SLEEPS) {
                    break;
                }
                if (!jlra.tryHandlePendingReference()) {
                    try {
                        Thread.sleep(sleepTime);
                        sleepTime <<= 1;
                        sleeps++;
                    } catch (InterruptedException e) {
                        interrupted = true;
                    }
                }
            }

            // no luck
            throw new OutOfMemoryError("Direct buffer memory");

        } finally {
            if (interrupted) {
                // don't swallow interrupts
                Thread.currentThread().interrupt();
            }
        }
    }